/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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:46:08,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:46:08,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:46:09,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:46:09,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:46:09,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:46:09,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:46:09,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:46:09,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:46:09,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:46:09,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:46:09,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:46:09,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:46:09,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:46:09,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:46:09,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:46:09,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:46:09,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:46:09,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:46:09,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:46:09,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:46:09,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:46:09,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:46:09,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:46:09,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:46:09,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:46:09,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:46:09,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:46:09,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:46:09,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:46:09,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:46:09,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:46:09,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:46:09,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:46:09,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:46:09,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:46:09,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:46:09,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:46:09,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:46:09,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:46:09,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:46:09,111 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 12:46:09,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:46:09,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:46:09,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:46:09,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:46:09,143 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:46:09,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:46:09,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:46:09,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:46:09,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:46:09,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:46:09,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:46:09,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:46:09,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:46:09,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:46:09,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:46:09,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:46:09,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:46:09,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:46:09,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:46:09,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:46:09,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:46:09,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:46:09,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:46:09,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:46:09,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:46:09,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:46:09,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:46:09,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:46:09,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:46:09,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:46:09,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:46:09,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:46:09,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:46:09,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:46:09,631 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:46:09,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-28 12:46:09,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c1e656c2/b311d9699079444f8f75d43e7e910324/FLAGe30899d9e [2020-10-28 12:46:10,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:46:10,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label04.c [2020-10-28 12:46:10,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c1e656c2/b311d9699079444f8f75d43e7e910324/FLAGe30899d9e [2020-10-28 12:46:10,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c1e656c2/b311d9699079444f8f75d43e7e910324 [2020-10-28 12:46:10,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:46:10,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:46:10,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:46:10,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:46:10,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:46:10,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:46:10" (1/1) ... [2020-10-28 12:46:10,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e23019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:10, skipping insertion in model container [2020-10-28 12:46:10,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:46:10" (1/1) ... [2020-10-28 12:46:10,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:46:11,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:46:11,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:46:11,568 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:46:11,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:46:11,808 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:46:11,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11 WrapperNode [2020-10-28 12:46:11,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:46:11,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:46:11,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:46:11,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:46:11,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:11,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... [2020-10-28 12:46:12,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:46:12,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:46:12,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:46:12,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:46:12,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:46:12,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:46:12,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:46:12,111 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:46:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:46:12,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:46:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:46:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:46:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:46:12,112 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:46:12,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:46:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:46:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:46:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:46:12,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:46:13,918 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:46:13,919 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:46:13,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:46:13 BoogieIcfgContainer [2020-10-28 12:46:13,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:46:13,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:46:13,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:46:13,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:46:13,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:46:10" (1/3) ... [2020-10-28 12:46:13,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a60489b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:46:13, skipping insertion in model container [2020-10-28 12:46:13,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:46:11" (2/3) ... [2020-10-28 12:46:13,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a60489b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:46:13, skipping insertion in model container [2020-10-28 12:46:13,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:46:13" (3/3) ... [2020-10-28 12:46:13,940 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label04.c [2020-10-28 12:46:13,970 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:46:13,983 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:46:14,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:46:14,046 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:46:14,046 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:46:14,047 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:46:14,047 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:46:14,047 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:46:14,047 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:46:14,047 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:46:14,047 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:46:14,082 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-28 12:46:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 12:46:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:14,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:14,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1113659686, now seen corresponding path program 1 times [2020-10-28 12:46:14,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:14,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597256715] [2020-10-28 12:46:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:14,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:15,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:15,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 12:46:15,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-28 12:46:15,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:15,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:15,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:46:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:46:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:15,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:15,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:15,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:46:15,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:15,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:15,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:15,580 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 12:46:15,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597256715] [2020-10-28 12:46:15,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:15,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:46:15,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564398113] [2020-10-28 12:46:15,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:46:15,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:15,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:46:15,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:46:15,618 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 5 states. [2020-10-28 12:46:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:20,123 INFO L93 Difference]: Finished difference Result 891 states and 1618 transitions. [2020-10-28 12:46:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:46:20,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-10-28 12:46:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:20,149 INFO L225 Difference]: With dead ends: 891 [2020-10-28 12:46:20,149 INFO L226 Difference]: Without dead ends: 565 [2020-10-28 12:46:20,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-28 12:46:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2020-10-28 12:46:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-28 12:46:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 856 transitions. [2020-10-28 12:46:20,306 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 856 transitions. Word has length 59 [2020-10-28 12:46:20,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:20,309 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 856 transitions. [2020-10-28 12:46:20,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:46:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 856 transitions. [2020-10-28 12:46:20,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 12:46:20,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:20,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 12:46:20,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:46:20,322 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:20,323 INFO L82 PathProgramCache]: Analyzing trace with hash -179012903, now seen corresponding path program 1 times [2020-10-28 12:46:20,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:20,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759197374] [2020-10-28 12:46:20,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:22,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:22,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:46:22,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:46:22,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-28 12:46:22,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:22,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:22,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:46:22,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:46:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:22,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:46:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:22,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:22,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:22,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:46:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:46:22,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:22,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:46:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:46:22,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759197374] [2020-10-28 12:46:22,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:22,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:46:22,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143282055] [2020-10-28 12:46:22,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:22,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:22,667 INFO L87 Difference]: Start difference. First operand 561 states and 856 transitions. Second operand 7 states. [2020-10-28 12:46:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:26,004 INFO L93 Difference]: Finished difference Result 1726 states and 2753 transitions. [2020-10-28 12:46:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:46:26,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 128 [2020-10-28 12:46:26,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:26,020 INFO L225 Difference]: With dead ends: 1726 [2020-10-28 12:46:26,021 INFO L226 Difference]: Without dead ends: 1171 [2020-10-28 12:46:26,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 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 12:46:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2020-10-28 12:46:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 941. [2020-10-28 12:46:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 941 states. [2020-10-28 12:46:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1306 transitions. [2020-10-28 12:46:26,130 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1306 transitions. Word has length 128 [2020-10-28 12:46:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:26,133 INFO L481 AbstractCegarLoop]: Abstraction has 941 states and 1306 transitions. [2020-10-28 12:46:26,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1306 transitions. [2020-10-28 12:46:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 12:46:26,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:26,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:26,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:46:26,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:26,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1968714655, now seen corresponding path program 1 times [2020-10-28 12:46:26,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:26,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193930485] [2020-10-28 12:46:26,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:26,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:26,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 12:46:26,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:26,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-28 12:46:26,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:26,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:26,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:46:26,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:26,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:46:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:46:27,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:46:27,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:27,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:27,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:46:27,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:46:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193930485] [2020-10-28 12:46:27,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:27,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:46:27,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533404586] [2020-10-28 12:46:27,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:27,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:27,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:27,269 INFO L87 Difference]: Start difference. First operand 941 states and 1306 transitions. Second operand 7 states. [2020-10-28 12:46:30,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:30,351 INFO L93 Difference]: Finished difference Result 2282 states and 3243 transitions. [2020-10-28 12:46:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:46:30,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-28 12:46:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:30,365 INFO L225 Difference]: With dead ends: 2282 [2020-10-28 12:46:30,365 INFO L226 Difference]: Without dead ends: 1347 [2020-10-28 12:46:30,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:46:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-10-28 12:46:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 943. [2020-10-28 12:46:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-10-28 12:46:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1282 transitions. [2020-10-28 12:46:30,432 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1282 transitions. Word has length 132 [2020-10-28 12:46:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:30,434 INFO L481 AbstractCegarLoop]: Abstraction has 943 states and 1282 transitions. [2020-10-28 12:46:30,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1282 transitions. [2020-10-28 12:46:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-28 12:46:30,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:30,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:46:30,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:46:30,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash -561334944, now seen corresponding path program 1 times [2020-10-28 12:46:30,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:30,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872799864] [2020-10-28 12:46:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 12:46:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:46:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 12:46:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:35,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 12:46:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:46:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:35,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:35,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:35,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:35,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:46:35,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:35,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:35,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:35,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:46:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:35,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:35,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:46:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 12:46:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:35,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:46:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:46:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 12:46:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:46:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 12:46:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:36,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:36,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:46:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:46:36,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872799864] [2020-10-28 12:46:36,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:36,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:36,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310695426] [2020-10-28 12:46:36,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:36,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:36,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:36,343 INFO L87 Difference]: Start difference. First operand 943 states and 1282 transitions. Second operand 7 states. [2020-10-28 12:46:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:39,648 INFO L93 Difference]: Finished difference Result 2654 states and 3723 transitions. [2020-10-28 12:46:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:46:39,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-28 12:46:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:39,664 INFO L225 Difference]: With dead ends: 2654 [2020-10-28 12:46:39,664 INFO L226 Difference]: Without dead ends: 1717 [2020-10-28 12:46:39,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:46:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2020-10-28 12:46:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1323. [2020-10-28 12:46:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-28 12:46:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1732 transitions. [2020-10-28 12:46:39,737 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1732 transitions. Word has length 226 [2020-10-28 12:46:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:39,739 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 1732 transitions. [2020-10-28 12:46:39,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:39,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1732 transitions. [2020-10-28 12:46:39,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 12:46:39,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:39,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:39,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:46:39,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:39,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1039124158, now seen corresponding path program 1 times [2020-10-28 12:46:39,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:39,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431808362] [2020-10-28 12:46:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:40,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:42,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:42,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 12:46:42,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:46:42,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2782 [2020-10-28 12:46:42,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:42,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:46:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:46:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:42,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:42,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:42,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:46:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:43,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:43,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:46:43,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 12:46:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:43,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:46:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 12:46:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:43,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:43,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:46:43,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:43,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 102 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:46:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431808362] [2020-10-28 12:46:43,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:43,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:43,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324265081] [2020-10-28 12:46:43,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:43,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:43,391 INFO L87 Difference]: Start difference. First operand 1323 states and 1732 transitions. Second operand 7 states. [2020-10-28 12:46:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:46,678 INFO L93 Difference]: Finished difference Result 3396 states and 4598 transitions. [2020-10-28 12:46:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:46:46,682 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-28 12:46:46,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:46,697 INFO L225 Difference]: With dead ends: 3396 [2020-10-28 12:46:46,697 INFO L226 Difference]: Without dead ends: 2079 [2020-10-28 12:46:46,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 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 12:46:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2020-10-28 12:46:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1887. [2020-10-28 12:46:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-10-28 12:46:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2407 transitions. [2020-10-28 12:46:46,781 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2407 transitions. Word has length 241 [2020-10-28 12:46:46,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:46,781 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2407 transitions. [2020-10-28 12:46:46,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2407 transitions. [2020-10-28 12:46:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-28 12:46:46,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:46,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:46,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:46:46,795 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash -301369444, now seen corresponding path program 1 times [2020-10-28 12:46:46,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:46,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902572226] [2020-10-28 12:46:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:51,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:51,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-28 12:46:51,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 12:46:51,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 231 [2020-10-28 12:46:51,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:52,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:52,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:52,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:52,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:46:52,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:52,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:52,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:52,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:46:52,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:46:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:52,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:46:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 12:46:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:52,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:52,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:46:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 12:46:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:52,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:46:52,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 12:46:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:52,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:46:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:52,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-28 12:46:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:52,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:46:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 374 proven. 144 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-28 12:46:53,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902572226] [2020-10-28 12:46:53,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:53,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:53,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263199449] [2020-10-28 12:46:53,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:53,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:53,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:53,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:53,255 INFO L87 Difference]: Start difference. First operand 1887 states and 2407 transitions. Second operand 7 states. [2020-10-28 12:46:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:57,380 INFO L93 Difference]: Finished difference Result 4716 states and 6109 transitions. [2020-10-28 12:46:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:46:57,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-28 12:46:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:57,397 INFO L225 Difference]: With dead ends: 4716 [2020-10-28 12:46:57,397 INFO L226 Difference]: Without dead ends: 2441 [2020-10-28 12:46:57,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 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 12:46:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2020-10-28 12:46:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2247. [2020-10-28 12:46:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2247 states. [2020-10-28 12:46:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 2502 transitions. [2020-10-28 12:46:57,482 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 2502 transitions. Word has length 442 [2020-10-28 12:46:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:57,483 INFO L481 AbstractCegarLoop]: Abstraction has 2247 states and 2502 transitions. [2020-10-28 12:46:57,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 2502 transitions. [2020-10-28 12:46:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-28 12:46:57,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:57,496 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:57,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:46:57,496 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:57,497 INFO L82 PathProgramCache]: Analyzing trace with hash 500580904, now seen corresponding path program 1 times [2020-10-28 12:46:57,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:57,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629444045] [2020-10-28 12:46:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:57,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:00,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-28 12:47:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-28 12:47:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-28 12:47:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 12:47:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:00,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:00,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:00,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:00,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:47:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:00,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:00,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:00,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:47:00,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:00,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:00,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:00,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:00,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:47:00,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:00,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:00,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:00,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:00,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:00,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:00,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:00,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:00,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:47:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:01,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:01,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:01,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:01,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:47:01,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:01,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:47:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:01,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:01,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:01,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:01,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:47:01,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:01,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:01,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:01,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 564 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-28 12:47:02,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629444045] [2020-10-28 12:47:02,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:02,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:47:02,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478907721] [2020-10-28 12:47:02,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:47:02,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:02,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:47:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:47:02,192 INFO L87 Difference]: Start difference. First operand 2247 states and 2502 transitions. Second operand 8 states. [2020-10-28 12:47:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:04,893 INFO L93 Difference]: Finished difference Result 5061 states and 5714 transitions. [2020-10-28 12:47:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:47:04,894 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-28 12:47:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:04,911 INFO L225 Difference]: With dead ends: 5061 [2020-10-28 12:47:04,912 INFO L226 Difference]: Without dead ends: 3002 [2020-10-28 12:47:04,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:47:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-10-28 12:47:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2803. [2020-10-28 12:47:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-10-28 12:47:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3103 transitions. [2020-10-28 12:47:05,018 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3103 transitions. Word has length 468 [2020-10-28 12:47:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:05,020 INFO L481 AbstractCegarLoop]: Abstraction has 2803 states and 3103 transitions. [2020-10-28 12:47:05,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:47:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3103 transitions. [2020-10-28 12:47:05,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2020-10-28 12:47:05,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:05,042 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 12:47:05,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:47:05,043 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2112169331, now seen corresponding path program 1 times [2020-10-28 12:47:05,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:05,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553721129] [2020-10-28 12:47:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 647 [2020-10-28 12:47:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-10-28 12:47:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:06,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:47:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:47:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:47:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:06,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:06,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:06,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:47:06,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:06,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:06,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:06,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:06,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:06,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:06,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:47:06,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:06,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:06,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:06,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:06,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:06,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:06,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:06,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:47:06,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:07,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:07,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:47:07,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:07,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:47:07,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:07,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:07,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:47:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:47:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:07,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:47:07,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:07,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:07,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-28 12:47:07,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553721129] [2020-10-28 12:47:07,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:07,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:07,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299951998] [2020-10-28 12:47:07,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:07,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:07,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:07,731 INFO L87 Difference]: Start difference. First operand 2803 states and 3103 transitions. Second operand 7 states. [2020-10-28 12:47:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:11,062 INFO L93 Difference]: Finished difference Result 5814 states and 6467 transitions. [2020-10-28 12:47:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:47:11,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 627 [2020-10-28 12:47:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:11,089 INFO L225 Difference]: With dead ends: 5814 [2020-10-28 12:47:11,090 INFO L226 Difference]: Without dead ends: 3199 [2020-10-28 12:47:11,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:47:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-10-28 12:47:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 2989. [2020-10-28 12:47:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2020-10-28 12:47:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3302 transitions. [2020-10-28 12:47:11,226 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3302 transitions. Word has length 627 [2020-10-28 12:47:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:11,229 INFO L481 AbstractCegarLoop]: Abstraction has 2989 states and 3302 transitions. [2020-10-28 12:47:11,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3302 transitions. [2020-10-28 12:47:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2020-10-28 12:47:11,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:11,240 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, 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, 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, 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] [2020-10-28 12:47:11,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:47:11,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash 766389870, now seen corresponding path program 1 times [2020-10-28 12:47:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:11,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311927890] [2020-10-28 12:47:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:12,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:14,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 725 [2020-10-28 12:47:14,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3324 [2020-10-28 12:47:14,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:14,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:14,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-28 12:47:14,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:47:14,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:14,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:14,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:14,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:14,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:14,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:47:14,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:14,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:14,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:14,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:47:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:15,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:15,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:47:15,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:47:15,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:15,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:47:15,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:47:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:15,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:47:15,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:47:15,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:15,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:47:15,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-28 12:47:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:15,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:15,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:47:15,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:15,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:47:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1639 backedges. 629 proven. 72 refuted. 0 times theorem prover too weak. 938 trivial. 0 not checked. [2020-10-28 12:47:16,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311927890] [2020-10-28 12:47:16,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:16,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:16,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403035335] [2020-10-28 12:47:16,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:16,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:16,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:16,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:16,339 INFO L87 Difference]: Start difference. First operand 2989 states and 3302 transitions. Second operand 7 states. [2020-10-28 12:47:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:18,890 INFO L93 Difference]: Finished difference Result 6718 states and 7579 transitions. [2020-10-28 12:47:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:47:18,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 703 [2020-10-28 12:47:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:18,914 INFO L225 Difference]: With dead ends: 6718 [2020-10-28 12:47:18,914 INFO L226 Difference]: Without dead ends: 3733 [2020-10-28 12:47:18,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:47:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2020-10-28 12:47:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3543. [2020-10-28 12:47:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3543 states. [2020-10-28 12:47:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 3912 transitions. [2020-10-28 12:47:19,046 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 3912 transitions. Word has length 703 [2020-10-28 12:47:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:19,048 INFO L481 AbstractCegarLoop]: Abstraction has 3543 states and 3912 transitions. [2020-10-28 12:47:19,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 3912 transitions. [2020-10-28 12:47:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2020-10-28 12:47:19,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:19,061 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 12:47:19,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:47:19,061 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:19,062 INFO L82 PathProgramCache]: Analyzing trace with hash 79933198, now seen corresponding path program 1 times [2020-10-28 12:47:19,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:19,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930363048] [2020-10-28 12:47:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:23,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:24,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:24,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-28 12:47:24,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:24,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:47:24,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:24,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-28 12:47:24,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 12:47:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:24,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:24,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:24,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:24,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:47:24,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:24,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:24,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:24,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:24,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:24,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:24,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:24,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:47:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:24,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:47:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 12:47:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-28 12:47:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:25,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:25,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:47:25,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-28 12:47:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:25,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:25,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:47:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1797 backedges. 667 proven. 186 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2020-10-28 12:47:25,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930363048] [2020-10-28 12:47:25,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:25,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:25,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034815889] [2020-10-28 12:47:25,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:25,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:25,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:25,946 INFO L87 Difference]: Start difference. First operand 3543 states and 3912 transitions. Second operand 7 states. [2020-10-28 12:47:28,776 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:47:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:29,096 INFO L93 Difference]: Finished difference Result 8380 states and 9337 transitions. [2020-10-28 12:47:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:47:29,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 762 [2020-10-28 12:47:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:29,122 INFO L225 Difference]: With dead ends: 8380 [2020-10-28 12:47:29,122 INFO L226 Difference]: Without dead ends: 5025 [2020-10-28 12:47:29,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:47:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2020-10-28 12:47:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 4471. [2020-10-28 12:47:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4471 states. [2020-10-28 12:47:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4471 states to 4471 states and 4943 transitions. [2020-10-28 12:47:29,290 INFO L78 Accepts]: Start accepts. Automaton has 4471 states and 4943 transitions. Word has length 762 [2020-10-28 12:47:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:29,292 INFO L481 AbstractCegarLoop]: Abstraction has 4471 states and 4943 transitions. [2020-10-28 12:47:29,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4471 states and 4943 transitions. [2020-10-28 12:47:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-28 12:47:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:29,305 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-28 12:47:29,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:47:29,305 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1276418668, now seen corresponding path program 1 times [2020-10-28 12:47:29,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:29,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354527204] [2020-10-28 12:47:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:30,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:30,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:47:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:30,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:30,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:47:30,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:30,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:30,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:30,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:30,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:30,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:30,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:31,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:31,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:31,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:31,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:31,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:47:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:31,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 12:47:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-28 12:47:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:31,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:31,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:47:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 676 proven. 2 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2020-10-28 12:47:32,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354527204] [2020-10-28 12:47:32,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:32,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:47:32,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913182785] [2020-10-28 12:47:32,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:47:32,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:32,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:47:32,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:47:32,003 INFO L87 Difference]: Start difference. First operand 4471 states and 4943 transitions. Second operand 8 states. [2020-10-28 12:47:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:35,739 INFO L93 Difference]: Finished difference Result 10588 states and 11890 transitions. [2020-10-28 12:47:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:47:35,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 800 [2020-10-28 12:47:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:35,766 INFO L225 Difference]: With dead ends: 10588 [2020-10-28 12:47:35,766 INFO L226 Difference]: Without dead ends: 6121 [2020-10-28 12:47:35,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:47:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2020-10-28 12:47:35,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 5563. [2020-10-28 12:47:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5563 states. [2020-10-28 12:47:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 6088 transitions. [2020-10-28 12:47:35,917 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 6088 transitions. Word has length 800 [2020-10-28 12:47:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:35,919 INFO L481 AbstractCegarLoop]: Abstraction has 5563 states and 6088 transitions. [2020-10-28 12:47:35,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:47:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 6088 transitions. [2020-10-28 12:47:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2020-10-28 12:47:35,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:35,933 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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 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 12:47:35,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:47:35,934 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -70474955, now seen corresponding path program 1 times [2020-10-28 12:47:35,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:35,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131960280] [2020-10-28 12:47:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 867 [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4334 [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:47:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:47:40,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-28 12:47:40,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:47:40,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:40,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:47:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:40,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:47:40,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:47:40,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:40,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:40,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:40,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:47:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:47:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:47:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:47:41,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:47:41,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2329 backedges. 914 proven. 56 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-28 12:47:41,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131960280] [2020-10-28 12:47:41,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:41,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:47:41,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646012031] [2020-10-28 12:47:41,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:47:41,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:41,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:47:41,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:47:41,887 INFO L87 Difference]: Start difference. First operand 5563 states and 6088 transitions. Second operand 8 states. [2020-10-28 12:47:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:45,837 INFO L93 Difference]: Finished difference Result 13168 states and 14630 transitions. [2020-10-28 12:47:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:47:45,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 843 [2020-10-28 12:47:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:45,878 INFO L225 Difference]: With dead ends: 13168 [2020-10-28 12:47:45,878 INFO L226 Difference]: Without dead ends: 7977 [2020-10-28 12:47:45,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:47:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2020-10-28 12:47:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 7419. [2020-10-28 12:47:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7419 states. [2020-10-28 12:47:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7419 states to 7419 states and 8275 transitions. [2020-10-28 12:47:46,094 INFO L78 Accepts]: Start accepts. Automaton has 7419 states and 8275 transitions. Word has length 843 [2020-10-28 12:47:46,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:46,096 INFO L481 AbstractCegarLoop]: Abstraction has 7419 states and 8275 transitions. [2020-10-28 12:47:46,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:47:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7419 states and 8275 transitions. [2020-10-28 12:47:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2020-10-28 12:47:46,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:46,112 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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:46,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:47:46,112 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1179382889, now seen corresponding path program 1 times [2020-10-28 12:47:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682048438] [2020-10-28 12:47:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 900 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3850 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 12:47:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:47:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:47:50,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:47:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:47:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:47:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:47:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:47:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:50,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:47:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:50,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:51,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:51,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:47:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-28 12:47:51,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:51,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:47:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:51,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 12:47:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2365 backedges. 950 proven. 56 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-28 12:47:51,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682048438] [2020-10-28 12:47:51,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:51,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:47:51,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53470305] [2020-10-28 12:47:51,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:47:51,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:47:51,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:47:51,958 INFO L87 Difference]: Start difference. First operand 7419 states and 8275 transitions. Second operand 8 states. [2020-10-28 12:47:55,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:55,717 INFO L93 Difference]: Finished difference Result 15758 states and 17645 transitions. [2020-10-28 12:47:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:47:55,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 876 [2020-10-28 12:47:55,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:55,750 INFO L225 Difference]: With dead ends: 15758 [2020-10-28 12:47:55,751 INFO L226 Difference]: Without dead ends: 8711 [2020-10-28 12:47:55,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:47:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2020-10-28 12:47:55,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 8153. [2020-10-28 12:47:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8153 states. [2020-10-28 12:47:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 9049 transitions. [2020-10-28 12:47:55,976 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 9049 transitions. Word has length 876 [2020-10-28 12:47:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:55,977 INFO L481 AbstractCegarLoop]: Abstraction has 8153 states and 9049 transitions. [2020-10-28 12:47:55,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:47:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 9049 transitions. [2020-10-28 12:47:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-10-28 12:47:55,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:55,992 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, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:55,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:47:55,993 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2021904313, now seen corresponding path program 1 times [2020-10-28 12:47:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:55,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550858583] [2020-10-28 12:47:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:57,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 901 [2020-10-28 12:48:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:48:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-28 12:48:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:48:01,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:01,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:48:01,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:01,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:48:01,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:01,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:01,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:02,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:02,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:48:02,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:02,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:48:02,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:02,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:02,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:48:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:02,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:48:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:02,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:02,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:48:02,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 12:48:02,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:02,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:48:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:48:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2366 backedges. 951 proven. 56 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2020-10-28 12:48:02,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550858583] [2020-10-28 12:48:02,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:02,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:02,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42760305] [2020-10-28 12:48:02,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:02,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:02,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:02,875 INFO L87 Difference]: Start difference. First operand 8153 states and 9049 transitions. Second operand 8 states. [2020-10-28 12:48:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:06,779 INFO L93 Difference]: Finished difference Result 16674 states and 18528 transitions. [2020-10-28 12:48:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:48:06,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 877 [2020-10-28 12:48:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:06,811 INFO L225 Difference]: With dead ends: 16674 [2020-10-28 12:48:06,811 INFO L226 Difference]: Without dead ends: 8893 [2020-10-28 12:48:06,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:48:06,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2020-10-28 12:48:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 8337. [2020-10-28 12:48:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8337 states. [2020-10-28 12:48:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 9232 transitions. [2020-10-28 12:48:07,043 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 9232 transitions. Word has length 877 [2020-10-28 12:48:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:07,044 INFO L481 AbstractCegarLoop]: Abstraction has 8337 states and 9232 transitions. [2020-10-28 12:48:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:48:07,045 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 9232 transitions. [2020-10-28 12:48:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2020-10-28 12:48:07,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:07,061 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 12:48:07,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:48:07,061 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1429079575, now seen corresponding path program 1 times [2020-10-28 12:48:07,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:07,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014776085] [2020-10-28 12:48:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:07,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 912 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-28 12:48:12,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 12:48:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:12,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 12:48:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:12,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:13,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:13,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:48:13,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:13,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:48:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:13,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-28 12:48:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:13,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:13,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:13,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 961 proven. 72 refuted. 0 times theorem prover too weak. 1329 trivial. 0 not checked. [2020-10-28 12:48:13,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014776085] [2020-10-28 12:48:13,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:13,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:13,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885166093] [2020-10-28 12:48:13,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:13,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:13,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:13,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:13,688 INFO L87 Difference]: Start difference. First operand 8337 states and 9232 transitions. Second operand 7 states. [2020-10-28 12:48:16,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:16,706 INFO L93 Difference]: Finished difference Result 17042 states and 19041 transitions. [2020-10-28 12:48:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:48:16,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 888 [2020-10-28 12:48:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:16,736 INFO L225 Difference]: With dead ends: 17042 [2020-10-28 12:48:16,736 INFO L226 Difference]: Without dead ends: 8893 [2020-10-28 12:48:16,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 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 12:48:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2020-10-28 12:48:16,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 8527. [2020-10-28 12:48:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8527 states. [2020-10-28 12:48:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8527 states to 8527 states and 9435 transitions. [2020-10-28 12:48:16,968 INFO L78 Accepts]: Start accepts. Automaton has 8527 states and 9435 transitions. Word has length 888 [2020-10-28 12:48:16,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:16,969 INFO L481 AbstractCegarLoop]: Abstraction has 8527 states and 9435 transitions. [2020-10-28 12:48:16,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8527 states and 9435 transitions. [2020-10-28 12:48:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2020-10-28 12:48:16,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:16,987 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, 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, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:48:16,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:48:16,988 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:16,988 INFO L82 PathProgramCache]: Analyzing trace with hash 2060821958, now seen corresponding path program 1 times [2020-10-28 12:48:16,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:16,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331427411] [2020-10-28 12:48:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:21,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 952 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 806 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:48:22,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:22,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:22,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:48:22,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:48:22,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:48:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:48:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:48:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:48:22,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-28 12:48:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:22,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:48:22,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2952 backedges. 989 proven. 2 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2020-10-28 12:48:23,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331427411] [2020-10-28 12:48:23,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:23,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:48:23,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60831180] [2020-10-28 12:48:23,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:48:23,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:23,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:48:23,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:48:23,653 INFO L87 Difference]: Start difference. First operand 8527 states and 9435 transitions. Second operand 7 states. [2020-10-28 12:48:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:26,380 INFO L93 Difference]: Finished difference Result 16868 states and 18775 transitions. [2020-10-28 12:48:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:48:26,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 926 [2020-10-28 12:48:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:26,413 INFO L225 Difference]: With dead ends: 16868 [2020-10-28 12:48:26,413 INFO L226 Difference]: Without dead ends: 8525 [2020-10-28 12:48:26,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:48:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8525 states. [2020-10-28 12:48:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8525 to 8521. [2020-10-28 12:48:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8521 states. [2020-10-28 12:48:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 9368 transitions. [2020-10-28 12:48:26,597 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 9368 transitions. Word has length 926 [2020-10-28 12:48:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:26,598 INFO L481 AbstractCegarLoop]: Abstraction has 8521 states and 9368 transitions. [2020-10-28 12:48:26,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:48:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 9368 transitions. [2020-10-28 12:48:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2020-10-28 12:48:26,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:26,615 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 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 12:48:26,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:48:26,616 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:26,617 INFO L82 PathProgramCache]: Analyzing trace with hash -630036677, now seen corresponding path program 1 times [2020-10-28 12:48:26,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:26,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513798223] [2020-10-28 12:48:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:28,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:31,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-28 12:48:31,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:48:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-10-28 12:48:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:31,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:48:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-28 12:48:31,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:48:31,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:32,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:48:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:32,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:32,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:48:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:48:32,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:48:32,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:32,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-28 12:48:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:48:32,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 12:48:32,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:32,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:48:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-28 12:48:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:32,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:48:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2611 backedges. 744 proven. 60 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2020-10-28 12:48:33,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513798223] [2020-10-28 12:48:33,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:33,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:33,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640742515] [2020-10-28 12:48:33,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:33,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:33,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:33,651 INFO L87 Difference]: Start difference. First operand 8521 states and 9368 transitions. Second operand 8 states. [2020-10-28 12:48:36,867 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-28 12:48:38,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:38,376 INFO L93 Difference]: Finished difference Result 18522 states and 20327 transitions. [2020-10-28 12:48:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 12:48:38,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 962 [2020-10-28 12:48:38,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:38,402 INFO L225 Difference]: With dead ends: 18522 [2020-10-28 12:48:38,402 INFO L226 Difference]: Without dead ends: 10185 [2020-10-28 12:48:38,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-28 12:48:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10185 states. [2020-10-28 12:48:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10185 to 9441. [2020-10-28 12:48:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9441 states. [2020-10-28 12:48:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9441 states to 9441 states and 10332 transitions. [2020-10-28 12:48:38,611 INFO L78 Accepts]: Start accepts. Automaton has 9441 states and 10332 transitions. Word has length 962 [2020-10-28 12:48:38,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:38,612 INFO L481 AbstractCegarLoop]: Abstraction has 9441 states and 10332 transitions. [2020-10-28 12:48:38,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:48:38,612 INFO L276 IsEmpty]: Start isEmpty. Operand 9441 states and 10332 transitions. [2020-10-28 12:48:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-28 12:48:38,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:38,633 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:48:38,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:48:38,633 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -331353868, now seen corresponding path program 1 times [2020-10-28 12:48:38,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:38,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319976618] [2020-10-28 12:48:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:43,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1121 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:48:43,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-28 12:48:43,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 12:48:43,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:44,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:48:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:48:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:48:44,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-28 12:48:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:48:44,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-28 12:48:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:48:44,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:44,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-28 12:48:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:44,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:44,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:48:44,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 12:48:44,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:44,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:48:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:48:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:48:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3470 backedges. 873 proven. 57 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2020-10-28 12:48:46,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319976618] [2020-10-28 12:48:46,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:46,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:46,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224619472] [2020-10-28 12:48:46,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:46,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:46,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:46,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:46,322 INFO L87 Difference]: Start difference. First operand 9441 states and 10332 transitions. Second operand 8 states. [2020-10-28 12:48:47,745 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 12:48:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:50,174 INFO L93 Difference]: Finished difference Result 21104 states and 23331 transitions. [2020-10-28 12:48:50,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:48:50,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1095 [2020-10-28 12:48:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:50,212 INFO L225 Difference]: With dead ends: 21104 [2020-10-28 12:48:50,212 INFO L226 Difference]: Without dead ends: 11843 [2020-10-28 12:48:50,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:48:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-10-28 12:48:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 10369. [2020-10-28 12:48:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10369 states. [2020-10-28 12:48:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10369 states to 10369 states and 11533 transitions. [2020-10-28 12:48:50,469 INFO L78 Accepts]: Start accepts. Automaton has 10369 states and 11533 transitions. Word has length 1095 [2020-10-28 12:48:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:50,471 INFO L481 AbstractCegarLoop]: Abstraction has 10369 states and 11533 transitions. [2020-10-28 12:48:50,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:48:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 10369 states and 11533 transitions. [2020-10-28 12:48:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2020-10-28 12:48:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:50,498 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, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:48:50,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:48:50,498 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:50,499 INFO L82 PathProgramCache]: Analyzing trace with hash 9008932, now seen corresponding path program 1 times [2020-10-28 12:48:50,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:50,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143234743] [2020-10-28 12:48:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 985 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:48:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:48:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:48:52,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:48:52,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:48:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:48:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:48:52,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:48:52,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:48:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:48:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:48:52,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:48:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:48:52,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-28 12:48:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:52,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:52,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:52,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-28 12:48:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 12:48:53,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:48:53,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-28 12:48:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:48:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:48:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 12:48:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:53,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-28 12:48:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:53,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:48:53,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:48:53,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:48:53,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:48:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3748 backedges. 1206 proven. 2 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2020-10-28 12:48:54,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143234743] [2020-10-28 12:48:54,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:48:54,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:48:54,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630866095] [2020-10-28 12:48:54,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:48:54,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:48:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:48:54,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:48:54,900 INFO L87 Difference]: Start difference. First operand 10369 states and 11533 transitions. Second operand 8 states. [2020-10-28 12:48:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:48:58,259 INFO L93 Difference]: Finished difference Result 20912 states and 23242 transitions. [2020-10-28 12:48:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:48:58,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1136 [2020-10-28 12:48:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:48:58,285 INFO L225 Difference]: With dead ends: 20912 [2020-10-28 12:48:58,285 INFO L226 Difference]: Without dead ends: 10179 [2020-10-28 12:48:58,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:48:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2020-10-28 12:48:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7617. [2020-10-28 12:48:58,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7617 states. [2020-10-28 12:48:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7617 states to 7617 states and 8197 transitions. [2020-10-28 12:48:58,479 INFO L78 Accepts]: Start accepts. Automaton has 7617 states and 8197 transitions. Word has length 1136 [2020-10-28 12:48:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:48:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 7617 states and 8197 transitions. [2020-10-28 12:48:58,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:48:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7617 states and 8197 transitions. [2020-10-28 12:48:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1423 [2020-10-28 12:48:58,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:48:58,510 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, 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, 10, 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, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:48:58,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:48:58,510 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:48:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:48:58,511 INFO L82 PathProgramCache]: Analyzing trace with hash 875173071, now seen corresponding path program 1 times [2020-10-28 12:48:58,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:48:58,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326893994] [2020-10-28 12:48:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:48:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:48:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:48:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1454 [2020-10-28 12:49:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-28 12:49:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:04,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:49:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:04,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:04,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:04,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:04,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:04,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:04,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:49:04,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:04,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:04,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:49:04,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:04,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:05,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:05,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:49:05,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:05,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:05,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:49:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:05,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 12:49:05,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:05,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:49:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6066 backedges. 2336 proven. 6 refuted. 0 times theorem prover too weak. 3724 trivial. 0 not checked. [2020-10-28 12:49:06,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326893994] [2020-10-28 12:49:06,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:06,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:49:06,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866114652] [2020-10-28 12:49:06,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:49:06,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:06,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:49:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:49:06,991 INFO L87 Difference]: Start difference. First operand 7617 states and 8197 transitions. Second operand 7 states. [2020-10-28 12:49:09,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:09,242 INFO L93 Difference]: Finished difference Result 16357 states and 17617 transitions. [2020-10-28 12:49:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:49:09,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1422 [2020-10-28 12:49:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:09,265 INFO L225 Difference]: With dead ends: 16357 [2020-10-28 12:49:09,265 INFO L226 Difference]: Without dead ends: 8746 [2020-10-28 12:49:09,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 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 12:49:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2020-10-28 12:49:09,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 8359. [2020-10-28 12:49:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8359 states. [2020-10-28 12:49:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8359 states to 8359 states and 8996 transitions. [2020-10-28 12:49:09,454 INFO L78 Accepts]: Start accepts. Automaton has 8359 states and 8996 transitions. Word has length 1422 [2020-10-28 12:49:09,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:09,456 INFO L481 AbstractCegarLoop]: Abstraction has 8359 states and 8996 transitions. [2020-10-28 12:49:09,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:49:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8359 states and 8996 transitions. [2020-10-28 12:49:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1444 [2020-10-28 12:49:09,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:09,485 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, 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, 10, 10, 10, 10, 10, 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, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:49:09,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:49:09,485 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 198095877, now seen corresponding path program 1 times [2020-10-28 12:49:09,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:09,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88804740] [2020-10-28 12:49:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:09,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:14,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:14,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1475 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1133 [2020-10-28 12:49:14,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-28 12:49:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:49:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:49:15,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:49:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 12:49:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-28 12:49:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-28 12:49:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-28 12:49:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-28 12:49:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-28 12:49:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-28 12:49:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:49:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:49:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-28 12:49:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:15,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:15,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:49:15,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-28 12:49:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:16,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:16,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 12:49:16,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 12:49:16,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-28 12:49:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:16,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:16,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:49:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:49:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6243 backedges. 2492 proven. 6 refuted. 0 times theorem prover too weak. 3745 trivial. 0 not checked. [2020-10-28 12:49:18,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88804740] [2020-10-28 12:49:18,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:49:18,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:49:18,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799978355] [2020-10-28 12:49:18,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:49:18,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:49:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:49:18,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:49:18,270 INFO L87 Difference]: Start difference. First operand 8359 states and 8996 transitions. Second operand 7 states. [2020-10-28 12:49:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:49:20,972 INFO L93 Difference]: Finished difference Result 16728 states and 18008 transitions. [2020-10-28 12:49:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:49:20,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1443 [2020-10-28 12:49:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:49:20,990 INFO L225 Difference]: With dead ends: 16728 [2020-10-28 12:49:20,990 INFO L226 Difference]: Without dead ends: 8375 [2020-10-28 12:49:21,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 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 12:49:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8375 states. [2020-10-28 12:49:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8375 to 8355. [2020-10-28 12:49:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8355 states. [2020-10-28 12:49:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 8960 transitions. [2020-10-28 12:49:21,180 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 8960 transitions. Word has length 1443 [2020-10-28 12:49:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:49:21,182 INFO L481 AbstractCegarLoop]: Abstraction has 8355 states and 8960 transitions. [2020-10-28 12:49:21,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:49:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 8960 transitions. [2020-10-28 12:49:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-28 12:49:21,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:49:21,210 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, 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, 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, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:49:21,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:49:21,210 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:49:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:49:21,213 INFO L82 PathProgramCache]: Analyzing trace with hash 113221397, now seen corresponding path program 1 times [2020-10-28 12:49:21,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:49:21,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33404678] [2020-10-28 12:49:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:49:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:49:21,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:22,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:49:24,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:49:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1483 [2020-10-28 12:49:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:49:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3083 [2020-10-28 12:49:24,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:49:24,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:49:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:49:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1422 [2020-10-28 12:49:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 12:49:24,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0