/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=DEEPEST --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/array-examples/sanfoundry_10_ground.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:14:44,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:14:44,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:14:44,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:14:44,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:14:44,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:14:44,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:14:44,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:14:44,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:14:44,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:14:44,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:14:44,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:14:44,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:14:44,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:14:44,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:14:44,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:14:44,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:14:45,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:14:45,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:14:45,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:14:45,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:14:45,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:14:45,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:14:45,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:14:45,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:14:45,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:14:45,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:14:45,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:14:45,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:14:45,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:14:45,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:14:45,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:14:45,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:14:45,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:14:45,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:14:45,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:14:45,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:14:45,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:14:45,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:14:45,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:14:45,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:14:45,054 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 [2020-10-27 14:14:45,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:14:45,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:14:45,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:14:45,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:14:45,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:14:45,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:14:45,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:14:45,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:14:45,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:14:45,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:14:45,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:14:45,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:14:45,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:14:45,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:14:45,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:14:45,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:14:45,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:14:45,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:14:45,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:14:45,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:14:45,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:14:45,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:14:45,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:14:45,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:14:45,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:14:45,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:14:45,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:14:45,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:14:45,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:14:45,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:14:45,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:14:45,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:14:45,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:14:45,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:14:45,554 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:14:45,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2020-10-27 14:14:45,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731398b6b/abf64dcbca694bd6aea55cf2b99064eb/FLAG2d35cb25d [2020-10-27 14:14:46,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:14:46,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_10_ground.c [2020-10-27 14:14:46,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731398b6b/abf64dcbca694bd6aea55cf2b99064eb/FLAG2d35cb25d [2020-10-27 14:14:46,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/731398b6b/abf64dcbca694bd6aea55cf2b99064eb [2020-10-27 14:14:46,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:14:46,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:14:46,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:14:46,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:14:46,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:14:46,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:46" (1/1) ... [2020-10-27 14:14:46,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c02c625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:46, skipping insertion in model container [2020-10-27 14:14:46,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:14:46" (1/1) ... [2020-10-27 14:14:46,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:14:46,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:14:46,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:14:46,955 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:14:47,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:14:47,033 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:14:47,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47 WrapperNode [2020-10-27 14:14:47,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:14:47,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:14:47,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:14:47,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:14:47,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (1/1) ... [2020-10-27 14:14:47,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:14:47,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:14:47,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:14:47,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:14:47,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (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 [2020-10-27 14:14:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:14:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:14:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:14:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:14:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:14:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:14:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:14:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:14:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:14:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:14:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:14:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:14:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:14:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:14:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:14:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:14:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:14:47,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:14:47,654 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:14:47,654 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-27 14:14:47,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:47 BoogieIcfgContainer [2020-10-27 14:14:47,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:14:47,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:14:47,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:14:47,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:14:47,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:14:46" (1/3) ... [2020-10-27 14:14:47,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:47, skipping insertion in model container [2020-10-27 14:14:47,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:14:47" (2/3) ... [2020-10-27 14:14:47,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce4d4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:14:47, skipping insertion in model container [2020-10-27 14:14:47,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:14:47" (3/3) ... [2020-10-27 14:14:47,681 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_10_ground.c [2020-10-27 14:14:47,698 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:14:47,707 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:14:47,723 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:14:47,768 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:14:47,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:14:47,769 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:14:47,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:14:47,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:14:47,769 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:14:47,769 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:14:47,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:14:47,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-27 14:14:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 14:14:47,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:47,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:47,806 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:47,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1456802392, now seen corresponding path program 1 times [2020-10-27 14:14:47,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:47,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877595538] [2020-10-27 14:14:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:48,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:14:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:14:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-27 14:14:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:14:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:14:48,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:14:48,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:14:48,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:48,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 14:14:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:48,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:14:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:14:48,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877595538] [2020-10-27 14:14:48,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:14:48,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:14:48,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756450636] [2020-10-27 14:14:48,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:14:48,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:14:48,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:14:48,785 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-27 14:14:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:49,011 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2020-10-27 14:14:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:14:49,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-27 14:14:49,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:49,023 INFO L225 Difference]: With dead ends: 66 [2020-10-27 14:14:49,023 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 14:14:49,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:14:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 14:14:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 14:14:49,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 14:14:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 14:14:49,095 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 17 [2020-10-27 14:14:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:49,097 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 14:14:49,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:14:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 14:14:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 14:14:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:49,100 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] [2020-10-27 14:14:49,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:14:49,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1040249451, now seen corresponding path program 1 times [2020-10-27 14:14:49,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:49,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010452301] [2020-10-27 14:14:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:49,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:14:49,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-27 14:14:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:14:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:14:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:49,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:49,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:49,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:49,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:14:49,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:49,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:49,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:49,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:49,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:14:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:14:49,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010452301] [2020-10-27 14:14:49,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:49,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:14:49,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108214217] [2020-10-27 14:14:49,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:14:49,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:50,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:14:50,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:14:50,008 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-27 14:14:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:50,187 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 14:14:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:14:50,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-27 14:14:50,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:50,189 INFO L225 Difference]: With dead ends: 60 [2020-10-27 14:14:50,189 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:14:50,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:14:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:14:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-10-27 14:14:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:14:50,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 14:14:50,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 21 [2020-10-27 14:14:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:50,200 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 14:14:50,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:14:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 14:14:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:14:50,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:50,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:50,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:14:50,202 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:50,203 INFO L82 PathProgramCache]: Analyzing trace with hash 590797890, now seen corresponding path program 2 times [2020-10-27 14:14:50,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:50,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576865639] [2020-10-27 14:14:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:50,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:50,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:14:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 407 [2020-10-27 14:14:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:14:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:14:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:14:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:14:50,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576865639] [2020-10-27 14:14:50,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:14:50,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:14:50,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134726409] [2020-10-27 14:14:50,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:14:50,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:50,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:14:50,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:14:50,695 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 4 states. [2020-10-27 14:14:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:50,778 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-10-27 14:14:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:14:50,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 14:14:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:50,779 INFO L225 Difference]: With dead ends: 53 [2020-10-27 14:14:50,779 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:14:50,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:14:50,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:14:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-27 14:14:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:14:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-27 14:14:50,788 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 24 [2020-10-27 14:14:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:50,789 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-27 14:14:50,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:14:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-27 14:14:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:14:50,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:50,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:50,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:14:50,790 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:50,791 INFO L82 PathProgramCache]: Analyzing trace with hash -689065788, now seen corresponding path program 1 times [2020-10-27 14:14:50,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:50,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468923752] [2020-10-27 14:14:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:51,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:14:51,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-27 14:14:51,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:14:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:51,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:14:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:51,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:51,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:51,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:14:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:51,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:14:51,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468923752] [2020-10-27 14:14:51,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:51,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:14:51,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730820551] [2020-10-27 14:14:51,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:14:51,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:14:51,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:14:51,642 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 10 states. [2020-10-27 14:14:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:52,099 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-27 14:14:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:14:52,100 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-10-27 14:14:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:52,103 INFO L225 Difference]: With dead ends: 52 [2020-10-27 14:14:52,103 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 14:14:52,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:14:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 14:14:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-10-27 14:14:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:14:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-27 14:14:52,117 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 24 [2020-10-27 14:14:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:52,117 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-27 14:14:52,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:14:52,118 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-27 14:14:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 14:14:52,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:52,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:52,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:14:52,119 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:52,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:52,120 INFO L82 PathProgramCache]: Analyzing trace with hash 996368838, now seen corresponding path program 1 times [2020-10-27 14:14:52,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:52,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292728375] [2020-10-27 14:14:52,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:53,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:14:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:53,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:14:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:14:53,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292728375] [2020-10-27 14:14:53,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:53,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:14:53,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277240089] [2020-10-27 14:14:53,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:14:53,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:14:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:14:53,459 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 12 states. [2020-10-27 14:14:54,019 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-27 14:14:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:54,197 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-27 14:14:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:14:54,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-27 14:14:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:54,199 INFO L225 Difference]: With dead ends: 67 [2020-10-27 14:14:54,200 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 14:14:54,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:14:54,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 14:14:54,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 41. [2020-10-27 14:14:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 14:14:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-27 14:14:54,216 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2020-10-27 14:14:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:54,218 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-27 14:14:54,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:14:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-27 14:14:54,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-27 14:14:54,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:54,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:54,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:14:54,222 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:54,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1496373832, now seen corresponding path program 2 times [2020-10-27 14:14:54,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:54,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284926626] [2020-10-27 14:14:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:54,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 14:14:56,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:14:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1879 [2020-10-27 14:14:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:56,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:14:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 14:14:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:56,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:56,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:56,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:14:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:56,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:14:56,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284926626] [2020-10-27 14:14:56,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:56,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:14:56,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797593375] [2020-10-27 14:14:56,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:14:56,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:56,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:14:56,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:14:56,426 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 13 states. [2020-10-27 14:14:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:57,173 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-10-27 14:14:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:14:57,174 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-27 14:14:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:57,178 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:14:57,178 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 14:14:57,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:14:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 14:14:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 37. [2020-10-27 14:14:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:14:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-27 14:14:57,188 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 28 [2020-10-27 14:14:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:57,188 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-27 14:14:57,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:14:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-27 14:14:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:14:57,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:57,190 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:14:57,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:14:57,190 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1354278509, now seen corresponding path program 1 times [2020-10-27 14:14:57,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:57,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723911902] [2020-10-27 14:14:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:57,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:57,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:57,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:14:57,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:57,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-27 14:14:57,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:57,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:14:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:57,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:14:57,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:58,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:58,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:58,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:58,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:58,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:58,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:58,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:58,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-27 14:14:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:58,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:58,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:14:58,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:58,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:14:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:58,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:14:58,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:14:58,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723911902] [2020-10-27 14:14:58,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:58,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:14:58,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115194871] [2020-10-27 14:14:58,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:14:58,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:58,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:14:58,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:14:58,026 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2020-10-27 14:14:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:14:58,301 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-27 14:14:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:14:58,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-27 14:14:58,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:14:58,302 INFO L225 Difference]: With dead ends: 77 [2020-10-27 14:14:58,303 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 14:14:58,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:14:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 14:14:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-10-27 14:14:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:14:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-27 14:14:58,320 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2020-10-27 14:14:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:14:58,321 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-27 14:14:58,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:14:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-27 14:14:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 14:14:58,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:14:58,324 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:14:58,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:14:58,324 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:14:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:14:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1312053644, now seen corresponding path program 2 times [2020-10-27 14:14:58,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:14:58,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676883924] [2020-10-27 14:14:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:14:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:58,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:58,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:59,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:14:59,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:14:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-27 14:14:59,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:14:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:14:59,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:14:59,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:14:59,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:14:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:59,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:14:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:14:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:14:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:14:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:14:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:14:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:14:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:14:59,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:14:59,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:14:59,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:14:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:14:59,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:14:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:14:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:14:59,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:14:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:14:59,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:14:59,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676883924] [2020-10-27 14:14:59,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:14:59,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:14:59,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118990354] [2020-10-27 14:14:59,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:14:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:14:59,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:14:59,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:14:59,656 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 12 states. [2020-10-27 14:15:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:00,226 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-27 14:15:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:15:00,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-27 14:15:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:00,228 INFO L225 Difference]: With dead ends: 68 [2020-10-27 14:15:00,229 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 14:15:00,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:15:00,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 14:15:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2020-10-27 14:15:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-27 14:15:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-27 14:15:00,242 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 35 [2020-10-27 14:15:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:00,242 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-27 14:15:00,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:15:00,243 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-27 14:15:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:15:00,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:00,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:00,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:15:00,249 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1372147638, now seen corresponding path program 1 times [2020-10-27 14:15:00,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:00,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096800575] [2020-10-27 14:15:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:00,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:01,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:15:01,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1690 [2020-10-27 14:15:01,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:15:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:15:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:02,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:02,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:02,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:02,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:02,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:02,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:15:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:02,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:02,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:02,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:15:02,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096800575] [2020-10-27 14:15:02,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:02,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:15:02,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44479846] [2020-10-27 14:15:02,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:15:02,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:15:02,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:15:02,272 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 14 states. [2020-10-27 14:15:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:03,196 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2020-10-27 14:15:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:15:03,197 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-27 14:15:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:03,200 INFO L225 Difference]: With dead ends: 90 [2020-10-27 14:15:03,200 INFO L226 Difference]: Without dead ends: 87 [2020-10-27 14:15:03,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:15:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-27 14:15:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2020-10-27 14:15:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:15:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-27 14:15:03,230 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 37 [2020-10-27 14:15:03,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:03,230 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-27 14:15:03,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:15:03,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-27 14:15:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:15:03,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:03,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:03,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:15:03,234 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash -385765256, now seen corresponding path program 2 times [2020-10-27 14:15:03,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:03,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715981362] [2020-10-27 14:15:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:03,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:03,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:05,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:15:05,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:15:05,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-27 14:15:05,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:15:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:05,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:15:05,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:05,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:15:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:05,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:15:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 14:15:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:05,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:05,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:05,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:15:05,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715981362] [2020-10-27 14:15:05,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:05,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:15:05,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953200437] [2020-10-27 14:15:05,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:15:05,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:05,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:15:05,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:15:05,363 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 15 states. [2020-10-27 14:15:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:06,685 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2020-10-27 14:15:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:15:06,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-27 14:15:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:06,688 INFO L225 Difference]: With dead ends: 105 [2020-10-27 14:15:06,688 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 14:15:06,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:15:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 14:15:06,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 56. [2020-10-27 14:15:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 14:15:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-10-27 14:15:06,704 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 39 [2020-10-27 14:15:06,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:06,704 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-10-27 14:15:06,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:15:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-10-27 14:15:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 14:15:06,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:06,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:06,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:15:06,706 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:06,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:06,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1817909062, now seen corresponding path program 3 times [2020-10-27 14:15:06,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:06,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689615698] [2020-10-27 14:15:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:06,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:07,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:15:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:15:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1583 [2020-10-27 14:15:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:15:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:15:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:08,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:08,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:08,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:08,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:08,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:08,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:08,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:08,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:08,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:15:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:08,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:08,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:08,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:08,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:08,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:08,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:08,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:08,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:08,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:15:08,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689615698] [2020-10-27 14:15:08,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:08,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:15:08,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396992032] [2020-10-27 14:15:08,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:15:08,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:15:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:15:08,830 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 18 states. [2020-10-27 14:15:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:10,419 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-10-27 14:15:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:15:10,420 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-10-27 14:15:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:10,422 INFO L225 Difference]: With dead ends: 102 [2020-10-27 14:15:10,422 INFO L226 Difference]: Without dead ends: 99 [2020-10-27 14:15:10,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:15:10,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-27 14:15:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 48. [2020-10-27 14:15:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:15:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-27 14:15:10,448 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 41 [2020-10-27 14:15:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:10,451 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-27 14:15:10,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:15:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-27 14:15:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 14:15:10,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:10,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:10,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:15:10,453 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:10,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1809706013, now seen corresponding path program 3 times [2020-10-27 14:15:10,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:10,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765773087] [2020-10-27 14:15:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:10,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:11,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:15:11,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:11,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-27 14:15:11,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:11,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:15:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:11,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:15:11,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:11,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:11,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:11,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:11,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 14:15:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:11,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:11,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:15:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:11,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:11,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:15:11,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765773087] [2020-10-27 14:15:11,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:11,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:15:11,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844554674] [2020-10-27 14:15:11,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:15:11,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:15:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:15:11,349 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 10 states. [2020-10-27 14:15:11,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:11,693 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-10-27 14:15:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:15:11,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-27 14:15:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:11,696 INFO L225 Difference]: With dead ends: 99 [2020-10-27 14:15:11,696 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 14:15:11,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:15:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 14:15:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2020-10-27 14:15:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 14:15:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-10-27 14:15:11,710 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 43 [2020-10-27 14:15:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:11,710 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-10-27 14:15:11,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:15:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-10-27 14:15:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:15:11,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:11,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:11,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:15:11,714 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash -423202378, now seen corresponding path program 4 times [2020-10-27 14:15:11,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:11,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233205685] [2020-10-27 14:15:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:15:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 831 [2020-10-27 14:15:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:15:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 14:15:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:12,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:12,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:12,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:15:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:12,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:15:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:12,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:12,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:15:12,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233205685] [2020-10-27 14:15:12,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:12,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:15:12,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683266840] [2020-10-27 14:15:12,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:15:12,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:12,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:15:12,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:15:12,796 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 14 states. [2020-10-27 14:15:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:13,437 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-10-27 14:15:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:15:13,438 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 46 [2020-10-27 14:15:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:13,440 INFO L225 Difference]: With dead ends: 86 [2020-10-27 14:15:13,441 INFO L226 Difference]: Without dead ends: 83 [2020-10-27 14:15:13,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:15:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-27 14:15:13,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-27 14:15:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:15:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-10-27 14:15:13,471 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 46 [2020-10-27 14:15:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:13,473 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-10-27 14:15:13,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:15:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-10-27 14:15:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:15:13,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:13,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:13,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:15:13,476 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2002471240, now seen corresponding path program 4 times [2020-10-27 14:15:13,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:13,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996881638] [2020-10-27 14:15:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:14,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:15:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1228 [2020-10-27 14:15:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:15:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:15:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:15,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:15,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:15:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:15,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:15:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:15,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:15,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:15:15,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996881638] [2020-10-27 14:15:15,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:15,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:15:15,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110799707] [2020-10-27 14:15:15,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:15:15,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:15,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:15:15,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:15:15,078 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 16 states. [2020-10-27 14:15:16,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:16,342 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2020-10-27 14:15:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:15:16,342 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-27 14:15:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:16,344 INFO L225 Difference]: With dead ends: 112 [2020-10-27 14:15:16,344 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 14:15:16,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:15:16,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 14:15:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 69. [2020-10-27 14:15:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-27 14:15:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-27 14:15:16,363 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 48 [2020-10-27 14:15:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:16,363 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-27 14:15:16,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:15:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-27 14:15:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:15:16,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:16,364 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:16,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:15:16,365 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:16,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:16,365 INFO L82 PathProgramCache]: Analyzing trace with hash 738575162, now seen corresponding path program 5 times [2020-10-27 14:15:16,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:16,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378920087] [2020-10-27 14:15:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:16,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:18,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:15:18,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:15:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-27 14:15:18,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:15:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:15:18,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:18,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:18,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:18,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:15:18,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:18,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:18,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:15:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:18,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:15:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:18,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:18,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:15:18,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378920087] [2020-10-27 14:15:18,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:18,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:15:18,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270061664] [2020-10-27 14:15:18,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:15:18,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:18,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:15:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:15:18,533 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 19 states. [2020-10-27 14:15:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:20,354 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2020-10-27 14:15:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:15:20,358 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-27 14:15:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:20,360 INFO L225 Difference]: With dead ends: 109 [2020-10-27 14:15:20,360 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:15:20,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:15:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:15:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 59. [2020-10-27 14:15:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 14:15:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-27 14:15:20,379 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 50 [2020-10-27 14:15:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:20,380 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-27 14:15:20,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:15:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-27 14:15:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 14:15:20,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:20,381 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:20,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:15:20,381 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:20,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2071833249, now seen corresponding path program 5 times [2020-10-27 14:15:20,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:20,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795094697] [2020-10-27 14:15:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:21,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 14:15:21,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:21,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-27 14:15:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:21,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:15:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:15:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:21,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:21,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:15:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:21,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:21,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:15:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:21,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:21,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:15:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:15:21,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:21,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:21,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:15:21,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795094697] [2020-10-27 14:15:21,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:21,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:15:21,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714435487] [2020-10-27 14:15:21,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:15:21,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:15:21,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:15:21,420 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 12 states. [2020-10-27 14:15:21,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:21,876 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2020-10-27 14:15:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:15:21,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-27 14:15:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:21,879 INFO L225 Difference]: With dead ends: 121 [2020-10-27 14:15:21,879 INFO L226 Difference]: Without dead ends: 75 [2020-10-27 14:15:21,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:15:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-27 14:15:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62. [2020-10-27 14:15:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 14:15:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-10-27 14:15:21,895 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 54 [2020-10-27 14:15:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:21,895 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-10-27 14:15:21,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:15:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-10-27 14:15:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:15:21,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:21,896 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:21,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:15:21,897 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:21,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:21,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1934588378, now seen corresponding path program 6 times [2020-10-27 14:15:21,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:21,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396315280] [2020-10-27 14:15:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:22,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:22,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:15:22,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:23,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:23,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:15:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:23,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:23,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:23,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:23,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:23,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:15:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:23,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:23,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:23,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:15:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:23,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:23,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:23,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:23,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:15:23,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396315280] [2020-10-27 14:15:23,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:23,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:15:23,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486467357] [2020-10-27 14:15:23,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:15:23,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:23,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:15:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:15:23,129 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 16 states. [2020-10-27 14:15:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:24,037 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-10-27 14:15:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:15:24,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-27 14:15:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:24,040 INFO L225 Difference]: With dead ends: 104 [2020-10-27 14:15:24,040 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 14:15:24,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:15:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 14:15:24,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 82. [2020-10-27 14:15:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:15:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-10-27 14:15:24,057 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 57 [2020-10-27 14:15:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:24,057 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-10-27 14:15:24,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:15:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-10-27 14:15:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 14:15:24,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:24,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:24,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:15:24,058 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1204186264, now seen corresponding path program 6 times [2020-10-27 14:15:24,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:24,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039049421] [2020-10-27 14:15:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:24,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:24,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:25,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:15:25,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:25,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1394 [2020-10-27 14:15:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:15:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:15:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:25,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:25,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:15:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:25,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:25,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:25,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:15:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:25,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:25,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:15:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:15:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:25,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:25,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:25,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:25,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:15:25,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039049421] [2020-10-27 14:15:25,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:25,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:15:25,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875960428] [2020-10-27 14:15:25,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:15:25,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:25,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:15:25,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:15:25,922 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 18 states. [2020-10-27 14:15:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:27,631 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2020-10-27 14:15:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:15:27,632 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-10-27 14:15:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:27,634 INFO L225 Difference]: With dead ends: 134 [2020-10-27 14:15:27,634 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:15:27,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:15:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:15:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 84. [2020-10-27 14:15:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:15:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-27 14:15:27,653 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 59 [2020-10-27 14:15:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:27,653 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-27 14:15:27,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:15:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-27 14:15:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:15:27,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:27,654 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:27,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:15:27,655 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:27,655 INFO L82 PathProgramCache]: Analyzing trace with hash 632576042, now seen corresponding path program 7 times [2020-10-27 14:15:27,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:27,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710088229] [2020-10-27 14:15:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:28,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:29,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:29,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:15:29,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:15:29,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2198 [2020-10-27 14:15:29,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:15:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:29,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:15:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:30,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:15:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:15:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:30,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:15:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:15:30,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710088229] [2020-10-27 14:15:30,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:30,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:15:30,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492936021] [2020-10-27 14:15:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:15:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:15:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:15:30,425 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 21 states. [2020-10-27 14:15:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:32,736 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2020-10-27 14:15:32,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:15:32,737 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 61 [2020-10-27 14:15:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:32,738 INFO L225 Difference]: With dead ends: 131 [2020-10-27 14:15:32,738 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 14:15:32,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:15:32,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 14:15:32,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-10-27 14:15:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-27 14:15:32,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-27 14:15:32,753 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 61 [2020-10-27 14:15:32,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:32,754 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-27 14:15:32,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:15:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-27 14:15:32,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:15:32,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:32,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:32,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:15:32,755 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:32,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:32,756 INFO L82 PathProgramCache]: Analyzing trace with hash -687277617, now seen corresponding path program 7 times [2020-10-27 14:15:32,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:32,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14925344] [2020-10-27 14:15:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:33,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:33,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 14:15:33,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-27 14:15:33,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:15:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:15:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:33,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:33,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:33,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:33,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:15:33,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:33,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:33,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:15:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:33,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:33,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:33,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:33,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:33,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:33,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:15:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:34,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:34,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:34,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:34,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:34,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:15:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:34,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:34,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:34,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:15:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:15:34,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14925344] [2020-10-27 14:15:34,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:34,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:15:34,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849065099] [2020-10-27 14:15:34,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:15:34,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:15:34,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:15:34,034 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 14 states. [2020-10-27 14:15:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:34,634 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-10-27 14:15:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:15:34,635 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-27 14:15:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:34,639 INFO L225 Difference]: With dead ends: 143 [2020-10-27 14:15:34,639 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 14:15:34,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:15:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 14:15:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2020-10-27 14:15:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 14:15:34,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-10-27 14:15:34,653 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 65 [2020-10-27 14:15:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:34,653 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-10-27 14:15:34,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:15:34,654 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-10-27 14:15:34,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 14:15:34,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:34,655 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:34,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:15:34,655 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:34,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:34,655 INFO L82 PathProgramCache]: Analyzing trace with hash -801876312, now seen corresponding path program 8 times [2020-10-27 14:15:34,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:34,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567356072] [2020-10-27 14:15:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:34,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:35,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 14:15:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:36,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:15:36,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:36,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:36,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:36,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:15:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:36,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:36,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:36,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:36,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:36,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:36,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:15:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:36,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:36,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:36,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:36,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:36,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:15:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:36,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:36,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:15:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:36,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:36,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:36,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:36,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:36,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:36,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:15:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 81 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:15:36,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567356072] [2020-10-27 14:15:36,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:36,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:15:36,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959382041] [2020-10-27 14:15:36,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:15:36,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:36,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:15:36,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:15:36,155 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 18 states. [2020-10-27 14:15:37,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:37,446 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-10-27 14:15:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:15:37,447 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-27 14:15:37,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:37,448 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:15:37,448 INFO L226 Difference]: Without dead ends: 119 [2020-10-27 14:15:37,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:15:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-27 14:15:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 97. [2020-10-27 14:15:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 14:15:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-10-27 14:15:37,466 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 68 [2020-10-27 14:15:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:37,467 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-10-27 14:15:37,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:15:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-10-27 14:15:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:15:37,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:37,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:37,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:15:37,468 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:37,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2023829418, now seen corresponding path program 8 times [2020-10-27 14:15:37,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:37,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10726451] [2020-10-27 14:15:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:37,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:38,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:15:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:39,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:39,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:39,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:15:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:39,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:15:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:39,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:39,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:15:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:15:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:39,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:39,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 8 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:15:39,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10726451] [2020-10-27 14:15:39,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:39,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:15:39,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885927239] [2020-10-27 14:15:39,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:15:39,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:39,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:15:39,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:15:39,173 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 20 states. [2020-10-27 14:15:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:41,350 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2020-10-27 14:15:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:15:41,355 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-10-27 14:15:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:41,356 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:15:41,356 INFO L226 Difference]: Without dead ends: 153 [2020-10-27 14:15:41,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:15:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-27 14:15:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 99. [2020-10-27 14:15:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-27 14:15:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-10-27 14:15:41,375 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 70 [2020-10-27 14:15:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:41,376 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-10-27 14:15:41,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:15:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-10-27 14:15:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 14:15:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:41,377 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:41,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:15:41,377 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1187262420, now seen corresponding path program 9 times [2020-10-27 14:15:41,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:41,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133711725] [2020-10-27 14:15:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:41,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:41,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:43,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 14:15:43,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:15:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:44,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:44,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:44,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:15:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:44,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:44,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:15:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:44,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:44,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:15:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 8 proven. 85 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 14:15:44,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133711725] [2020-10-27 14:15:44,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:44,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:15:44,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394946341] [2020-10-27 14:15:44,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:15:44,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:44,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:15:44,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:15:44,195 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 21 states. [2020-10-27 14:15:46,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:46,550 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2020-10-27 14:15:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:15:46,551 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-10-27 14:15:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:46,553 INFO L225 Difference]: With dead ends: 156 [2020-10-27 14:15:46,553 INFO L226 Difference]: Without dead ends: 153 [2020-10-27 14:15:46,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:15:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-27 14:15:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 81. [2020-10-27 14:15:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-27 14:15:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-10-27 14:15:46,569 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 72 [2020-10-27 14:15:46,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:46,569 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-10-27 14:15:46,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:15:46,570 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-10-27 14:15:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:15:46,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:46,570 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:46,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:15:46,571 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:46,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:46,571 INFO L82 PathProgramCache]: Analyzing trace with hash -864212911, now seen corresponding path program 9 times [2020-10-27 14:15:46,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:46,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034707026] [2020-10-27 14:15:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:15:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:15:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:47,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:15:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:47,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:47,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:47,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:15:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:15:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:15:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:15:47,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034707026] [2020-10-27 14:15:47,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:47,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:15:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514570500] [2020-10-27 14:15:47,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:15:47,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:15:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:15:47,356 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 16 states. [2020-10-27 14:15:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:48,043 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2020-10-27 14:15:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:15:48,044 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-27 14:15:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:48,045 INFO L225 Difference]: With dead ends: 165 [2020-10-27 14:15:48,046 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 14:15:48,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:15:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 14:15:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2020-10-27 14:15:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-27 14:15:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2020-10-27 14:15:48,063 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 76 [2020-10-27 14:15:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:48,063 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2020-10-27 14:15:48,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:15:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2020-10-27 14:15:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-27 14:15:48,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:48,064 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:48,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:15:48,064 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:48,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:48,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1467316696, now seen corresponding path program 10 times [2020-10-27 14:15:48,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:48,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770576824] [2020-10-27 14:15:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:15:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:15:49,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-27 14:15:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:15:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 14:15:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:15:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:49,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:15:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:49,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:15:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:49,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:15:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:15:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:49,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:49,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 118 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:15:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770576824] [2020-10-27 14:15:49,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:49,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:15:49,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000664570] [2020-10-27 14:15:49,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:15:49,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:15:49,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:15:49,502 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 20 states. [2020-10-27 14:15:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:51,079 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2020-10-27 14:15:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 14:15:51,080 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 79 [2020-10-27 14:15:51,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:51,082 INFO L225 Difference]: With dead ends: 140 [2020-10-27 14:15:51,082 INFO L226 Difference]: Without dead ends: 137 [2020-10-27 14:15:51,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:15:51,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-27 14:15:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 112. [2020-10-27 14:15:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 14:15:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2020-10-27 14:15:51,105 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 79 [2020-10-27 14:15:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:51,106 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2020-10-27 14:15:51,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:15:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2020-10-27 14:15:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 14:15:51,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:51,107 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:51,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:15:51,108 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:51,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash 565439258, now seen corresponding path program 10 times [2020-10-27 14:15:51,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:51,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657681758] [2020-10-27 14:15:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 14:15:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:15:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:15:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:15:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:15:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:15:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 119 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:15:53,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657681758] [2020-10-27 14:15:53,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:53,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:15:53,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44860378] [2020-10-27 14:15:53,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:15:53,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:15:53,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:15:53,267 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 22 states. [2020-10-27 14:15:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:15:56,067 INFO L93 Difference]: Finished difference Result 178 states and 202 transitions. [2020-10-27 14:15:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:15:56,068 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 81 [2020-10-27 14:15:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:15:56,071 INFO L225 Difference]: With dead ends: 178 [2020-10-27 14:15:56,071 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:15:56,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:15:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:15:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-27 14:15:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:15:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-10-27 14:15:56,093 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 81 [2020-10-27 14:15:56,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:15:56,093 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-10-27 14:15:56,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:15:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-10-27 14:15:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 14:15:56,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:15:56,095 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:15:56,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:15:56,095 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:15:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:15:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1444615132, now seen corresponding path program 11 times [2020-10-27 14:15:56,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:15:56,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420629547] [2020-10-27 14:15:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:15:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:57,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 14:15:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2245 [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 14:15:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:15:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:15:59,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:15:59,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:15:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:15:59,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:15:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:59,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:15:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:59,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:15:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:59,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:59,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:15:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:15:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:15:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:15:59,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:15:59,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:15:59,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:15:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:15:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 10 proven. 122 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-27 14:15:59,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420629547] [2020-10-27 14:15:59,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:15:59,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:15:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149459126] [2020-10-27 14:15:59,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:15:59,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:15:59,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:15:59,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:15:59,083 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 23 states. [2020-10-27 14:16:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:02,087 INFO L93 Difference]: Finished difference Result 178 states and 202 transitions. [2020-10-27 14:16:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:16:02,088 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 83 [2020-10-27 14:16:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:02,090 INFO L225 Difference]: With dead ends: 178 [2020-10-27 14:16:02,090 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:16:02,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:16:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:16:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 92. [2020-10-27 14:16:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 14:16:02,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-10-27 14:16:02,107 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 83 [2020-10-27 14:16:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:02,108 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-10-27 14:16:02,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:16:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-10-27 14:16:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 14:16:02,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:02,110 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:02,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:16:02,110 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:02,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1430250623, now seen corresponding path program 11 times [2020-10-27 14:16:02,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:02,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054415220] [2020-10-27 14:16:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:02,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:02,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 721 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 14:16:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:16:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:03,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:16:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:16:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:16:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:16:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:16:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:03,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:03,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 84 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:16:03,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054415220] [2020-10-27 14:16:03,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:03,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:16:03,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587783848] [2020-10-27 14:16:03,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:16:03,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:16:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:16:03,139 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 18 states. [2020-10-27 14:16:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:03,985 INFO L93 Difference]: Finished difference Result 187 states and 212 transitions. [2020-10-27 14:16:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:16:03,985 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 87 [2020-10-27 14:16:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:03,987 INFO L225 Difference]: With dead ends: 187 [2020-10-27 14:16:03,987 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:16:03,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:16:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:16:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 95. [2020-10-27 14:16:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-27 14:16:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 98 transitions. [2020-10-27 14:16:04,006 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 98 transitions. Word has length 87 [2020-10-27 14:16:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:04,006 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 98 transitions. [2020-10-27 14:16:04,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:16:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 98 transitions. [2020-10-27 14:16:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 14:16:04,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:04,007 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:04,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:16:04,008 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:04,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1489592218, now seen corresponding path program 12 times [2020-10-27 14:16:04,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:04,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755995267] [2020-10-27 14:16:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 14:16:05,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:16:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:16:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:16:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:16:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:16:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:16:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:05,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:05,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:05,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:05,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 12 proven. 162 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 14:16:05,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755995267] [2020-10-27 14:16:05,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:05,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:16:05,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169888462] [2020-10-27 14:16:05,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:16:05,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:05,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:16:05,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:16:05,635 INFO L87 Difference]: Start difference. First operand 95 states and 98 transitions. Second operand 22 states. [2020-10-27 14:16:07,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:07,586 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2020-10-27 14:16:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:16:07,587 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 90 [2020-10-27 14:16:07,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:07,589 INFO L225 Difference]: With dead ends: 158 [2020-10-27 14:16:07,589 INFO L226 Difference]: Without dead ends: 155 [2020-10-27 14:16:07,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:16:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-27 14:16:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-10-27 14:16:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-27 14:16:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2020-10-27 14:16:07,615 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 90 [2020-10-27 14:16:07,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:07,615 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2020-10-27 14:16:07,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:16:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2020-10-27 14:16:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 14:16:07,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:07,618 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:07,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:16:07,618 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:07,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:07,619 INFO L82 PathProgramCache]: Analyzing trace with hash 376097948, now seen corresponding path program 12 times [2020-10-27 14:16:07,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:07,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677361666] [2020-10-27 14:16:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1947 [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:16:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 14:16:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:16:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:16:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:16:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:16:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:16:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:16:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:10,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:10,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 12 proven. 163 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 14:16:10,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677361666] [2020-10-27 14:16:10,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:10,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:16:10,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150131918] [2020-10-27 14:16:10,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:16:10,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:10,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:16:10,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:16:10,316 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand 24 states. [2020-10-27 14:16:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:13,459 INFO L93 Difference]: Finished difference Result 200 states and 227 transitions. [2020-10-27 14:16:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 14:16:13,460 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2020-10-27 14:16:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:13,463 INFO L225 Difference]: With dead ends: 200 [2020-10-27 14:16:13,463 INFO L226 Difference]: Without dead ends: 197 [2020-10-27 14:16:13,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=184, Invalid=1886, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:16:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-27 14:16:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 129. [2020-10-27 14:16:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-27 14:16:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2020-10-27 14:16:13,496 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 92 [2020-10-27 14:16:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:13,496 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2020-10-27 14:16:13,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:16:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2020-10-27 14:16:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 14:16:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:13,498 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:13,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:16:13,498 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -245038818, now seen corresponding path program 13 times [2020-10-27 14:16:13,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:13,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289361972] [2020-10-27 14:16:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:13,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:16:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:16,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 14:16:16,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:16:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:17,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:16:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:16:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:16:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:16:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:16:17,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:16:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:16:17,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:16:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:16:17,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:16:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:16:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:17,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:17,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:16:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:16:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 12 proven. 166 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 14:16:17,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289361972] [2020-10-27 14:16:17,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:17,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:16:17,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620083416] [2020-10-27 14:16:17,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:16:17,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:16:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:16:17,397 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand 27 states. [2020-10-27 14:16:21,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:21,944 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2020-10-27 14:16:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:16:21,945 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 94 [2020-10-27 14:16:21,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:21,948 INFO L225 Difference]: With dead ends: 197 [2020-10-27 14:16:21,948 INFO L226 Difference]: Without dead ends: 194 [2020-10-27 14:16:21,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=246, Invalid=2106, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:16:21,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-27 14:16:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 103. [2020-10-27 14:16:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:16:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-10-27 14:16:21,971 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 94 [2020-10-27 14:16:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:21,972 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-10-27 14:16:21,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:16:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-10-27 14:16:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:16:21,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:21,973 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:21,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:16:21,974 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:21,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:21,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1010507587, now seen corresponding path program 13 times [2020-10-27 14:16:21,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:21,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259609549] [2020-10-27 14:16:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 14:16:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:22,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:22,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:16:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:16:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:22,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:22,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:22,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:16:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:22,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:16:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:16:22,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:16:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:16:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:23,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:23,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:23,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:23,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:16:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:23,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:23,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:23,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:23,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:16:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:23,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:23,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:23,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:23,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:16:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:23,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:16:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:23,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:23,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:23,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:16:23,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 112 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:16:23,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259609549] [2020-10-27 14:16:23,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:23,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:16:23,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332062872] [2020-10-27 14:16:23,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:16:23,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:16:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:16:23,065 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 20 states. [2020-10-27 14:16:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:24,116 INFO L93 Difference]: Finished difference Result 209 states and 237 transitions. [2020-10-27 14:16:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:16:24,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2020-10-27 14:16:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:24,119 INFO L225 Difference]: With dead ends: 209 [2020-10-27 14:16:24,119 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:16:24,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=1007, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:16:24,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:16:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 106. [2020-10-27 14:16:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-27 14:16:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2020-10-27 14:16:24,139 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 98 [2020-10-27 14:16:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:24,140 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2020-10-27 14:16:24,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:16:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2020-10-27 14:16:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:16:24,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:24,141 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:24,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:16:24,141 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1898413686, now seen corresponding path program 14 times [2020-10-27 14:16:24,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:24,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689507624] [2020-10-27 14:16:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:24,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:16:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 14:16:25,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:16:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:16:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:16:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:16:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:16:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:16:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:26,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:16:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:26,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:26,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 14 proven. 213 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 14:16:26,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689507624] [2020-10-27 14:16:26,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:26,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:16:26,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739811330] [2020-10-27 14:16:26,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:16:26,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:16:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:16:26,138 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand 24 states. [2020-10-27 14:16:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:28,485 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2020-10-27 14:16:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:16:28,493 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-10-27 14:16:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:28,495 INFO L225 Difference]: With dead ends: 176 [2020-10-27 14:16:28,495 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 14:16:28,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:16:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 14:16:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2020-10-27 14:16:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-27 14:16:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2020-10-27 14:16:28,530 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 101 [2020-10-27 14:16:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:28,531 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2020-10-27 14:16:28,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:16:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2020-10-27 14:16:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 14:16:28,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:28,536 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:28,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:16:28,537 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:28,537 INFO L82 PathProgramCache]: Analyzing trace with hash 896947916, now seen corresponding path program 14 times [2020-10-27 14:16:28,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:28,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422115998] [2020-10-27 14:16:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:28,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:30,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:30,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 14:16:30,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 14:16:30,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:31,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:16:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:16:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:16:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:16:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:16:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:16:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:16:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 14 proven. 214 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 14:16:31,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422115998] [2020-10-27 14:16:31,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:31,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:16:31,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007069408] [2020-10-27 14:16:31,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:16:31,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:31,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:16:31,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:16:31,416 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand 26 states. [2020-10-27 14:16:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:35,048 INFO L93 Difference]: Finished difference Result 222 states and 252 transitions. [2020-10-27 14:16:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:16:35,049 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 103 [2020-10-27 14:16:35,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:35,051 INFO L225 Difference]: With dead ends: 222 [2020-10-27 14:16:35,051 INFO L226 Difference]: Without dead ends: 219 [2020-10-27 14:16:35,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=201, Invalid=2249, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:16:35,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-27 14:16:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 144. [2020-10-27 14:16:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-27 14:16:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-10-27 14:16:35,105 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 103 [2020-10-27 14:16:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:35,108 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-10-27 14:16:35,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:16:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-10-27 14:16:35,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:16:35,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:35,114 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:35,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:16:35,114 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1410079858, now seen corresponding path program 15 times [2020-10-27 14:16:35,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:35,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373987587] [2020-10-27 14:16:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:35,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:36,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3233 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 14:16:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:39,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 14:16:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:16:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:16:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:16:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:16:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:16:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:16:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:39,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:39,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:39,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 14 proven. 217 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-27 14:16:39,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373987587] [2020-10-27 14:16:39,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:39,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:16:39,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247212321] [2020-10-27 14:16:39,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:16:39,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:39,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:16:39,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=745, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:16:39,382 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 29 states. [2020-10-27 14:16:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:44,624 INFO L93 Difference]: Finished difference Result 219 states and 248 transitions. [2020-10-27 14:16:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 14:16:44,625 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 105 [2020-10-27 14:16:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:44,628 INFO L225 Difference]: With dead ends: 219 [2020-10-27 14:16:44,628 INFO L226 Difference]: Without dead ends: 216 [2020-10-27 14:16:44,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:16:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-27 14:16:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 114. [2020-10-27 14:16:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-27 14:16:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-27 14:16:44,654 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 105 [2020-10-27 14:16:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:44,654 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-27 14:16:44,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:16:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-27 14:16:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:16:44,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:44,656 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:44,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:16:44,656 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:44,656 INFO L82 PathProgramCache]: Analyzing trace with hash -977186509, now seen corresponding path program 15 times [2020-10-27 14:16:44,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:44,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394944151] [2020-10-27 14:16:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:44,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:45,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:45,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:16:45,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-10-27 14:16:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:16:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 14:16:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:16:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:16:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:16:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:16:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:16:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:16:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:16:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:16:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:46,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 144 proven. 117 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:16:46,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394944151] [2020-10-27 14:16:46,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:46,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:16:46,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613531321] [2020-10-27 14:16:46,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:16:46,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:46,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:16:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:16:46,168 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 22 states. [2020-10-27 14:16:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:47,278 INFO L93 Difference]: Finished difference Result 231 states and 262 transitions. [2020-10-27 14:16:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:16:47,279 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-27 14:16:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:47,281 INFO L225 Difference]: With dead ends: 231 [2020-10-27 14:16:47,281 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 14:16:47,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:16:47,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 14:16:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117. [2020-10-27 14:16:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 14:16:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2020-10-27 14:16:47,314 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 109 [2020-10-27 14:16:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:47,314 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2020-10-27 14:16:47,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:16:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2020-10-27 14:16:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:16:47,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:47,315 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:47,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:16:47,315 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1030255476, now seen corresponding path program 16 times [2020-10-27 14:16:47,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:47,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094712664] [2020-10-27 14:16:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1506 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 14:16:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:49,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:16:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:16:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:16:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:16:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:16:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:16:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:16:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:16:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:49,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:49,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:49,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 16 proven. 271 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 14:16:49,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094712664] [2020-10-27 14:16:49,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:49,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:16:49,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238742733] [2020-10-27 14:16:49,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:16:49,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:49,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:16:49,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:16:49,607 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 26 states. [2020-10-27 14:16:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:16:52,353 INFO L93 Difference]: Finished difference Result 194 states and 216 transitions. [2020-10-27 14:16:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:16:52,354 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 112 [2020-10-27 14:16:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:16:52,356 INFO L225 Difference]: With dead ends: 194 [2020-10-27 14:16:52,356 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 14:16:52,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=1449, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:16:52,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 14:16:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-10-27 14:16:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-27 14:16:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-10-27 14:16:52,389 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 112 [2020-10-27 14:16:52,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:16:52,389 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-10-27 14:16:52,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:16:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-10-27 14:16:52,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 14:16:52,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:16:52,390 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:16:52,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:16:52,390 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:16:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:16:52,391 INFO L82 PathProgramCache]: Analyzing trace with hash -913076850, now seen corresponding path program 16 times [2020-10-27 14:16:52,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:16:52,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551398246] [2020-10-27 14:16:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:16:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:53,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:54,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2278 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 14:16:54,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:16:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:16:55,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:16:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:55,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:16:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:16:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:55,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:16:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:55,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:16:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:16:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:16:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:16:55,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:16:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:16:55,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:16:55,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:16:55,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:16:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:16:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:16:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:16:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:16:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:16:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:16:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:16:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 16 proven. 272 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 14:16:55,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551398246] [2020-10-27 14:16:55,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:16:55,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:16:55,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952470964] [2020-10-27 14:16:55,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:16:55,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:16:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:16:55,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:16:55,632 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 28 states. [2020-10-27 14:17:00,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:00,158 INFO L93 Difference]: Finished difference Result 241 states and 273 transitions. [2020-10-27 14:17:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:17:00,159 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2020-10-27 14:17:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:00,162 INFO L225 Difference]: With dead ends: 241 [2020-10-27 14:17:00,162 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 14:17:00,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=204, Invalid=2552, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:17:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 14:17:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 159. [2020-10-27 14:17:00,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:17:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 172 transitions. [2020-10-27 14:17:00,202 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 172 transitions. Word has length 114 [2020-10-27 14:17:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:00,202 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 172 transitions. [2020-10-27 14:17:00,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:17:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 172 transitions. [2020-10-27 14:17:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 14:17:00,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:00,203 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:00,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:17:00,204 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:00,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:00,204 INFO L82 PathProgramCache]: Analyzing trace with hash 26433040, now seen corresponding path program 17 times [2020-10-27 14:17:00,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:00,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948526447] [2020-10-27 14:17:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:00,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:02,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4219 [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:17:04,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:04,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 14:17:04,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:17:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:17:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:17:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:17:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:17:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:17:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:17:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:17:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:05,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:05,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 16 proven. 275 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-27 14:17:05,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948526447] [2020-10-27 14:17:05,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:05,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:17:05,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371039027] [2020-10-27 14:17:05,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:17:05,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:17:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:17:05,641 INFO L87 Difference]: Start difference. First operand 159 states and 172 transitions. Second operand 29 states. [2020-10-27 14:17:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:10,773 INFO L93 Difference]: Finished difference Result 244 states and 277 transitions. [2020-10-27 14:17:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:17:10,775 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 116 [2020-10-27 14:17:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:10,777 INFO L225 Difference]: With dead ends: 244 [2020-10-27 14:17:10,777 INFO L226 Difference]: Without dead ends: 241 [2020-10-27 14:17:10,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=259, Invalid=2821, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:17:10,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-27 14:17:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 125. [2020-10-27 14:17:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 14:17:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2020-10-27 14:17:10,813 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 116 [2020-10-27 14:17:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:10,813 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2020-10-27 14:17:10,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:17:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2020-10-27 14:17:10,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 14:17:10,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:10,815 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:10,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:17:10,815 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:10,815 INFO L82 PathProgramCache]: Analyzing trace with hash -473023947, now seen corresponding path program 17 times [2020-10-27 14:17:10,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:10,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067189899] [2020-10-27 14:17:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 14:17:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-27 14:17:12,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:17:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 14:17:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:17:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:17:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:17:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:17:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:17:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:17:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:17:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:17:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:17:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 180 proven. 145 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-27 14:17:12,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067189899] [2020-10-27 14:17:12,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:12,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:17:12,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552861205] [2020-10-27 14:17:12,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:17:12,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:17:12,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:17:12,590 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 24 states. [2020-10-27 14:17:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:13,995 INFO L93 Difference]: Finished difference Result 253 states and 287 transitions. [2020-10-27 14:17:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:17:13,996 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 120 [2020-10-27 14:17:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:13,998 INFO L225 Difference]: With dead ends: 253 [2020-10-27 14:17:13,998 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 14:17:14,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:17:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 14:17:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-10-27 14:17:14,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:17:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2020-10-27 14:17:14,026 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 120 [2020-10-27 14:17:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:14,026 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2020-10-27 14:17:14,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:17:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2020-10-27 14:17:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 14:17:14,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:14,027 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:17:14,027 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:14,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1125621052, now seen corresponding path program 18 times [2020-10-27 14:17:14,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:14,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624155797] [2020-10-27 14:17:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:15,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1926 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 14:17:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:17:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:17:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:17:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:17:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:17:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:16,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:17:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:17:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:17:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:17:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:16,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:16,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:16,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:16,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 336 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 14:17:16,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624155797] [2020-10-27 14:17:16,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:16,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:17:16,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326502403] [2020-10-27 14:17:16,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:17:16,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:16,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:17:16,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:17:16,884 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand 28 states. [2020-10-27 14:17:20,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:20,357 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2020-10-27 14:17:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-27 14:17:20,358 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 123 [2020-10-27 14:17:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:20,359 INFO L225 Difference]: With dead ends: 212 [2020-10-27 14:17:20,359 INFO L226 Difference]: Without dead ends: 209 [2020-10-27 14:17:20,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=122, Invalid=1770, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:17:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-27 14:17:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 172. [2020-10-27 14:17:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-27 14:17:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 185 transitions. [2020-10-27 14:17:20,400 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 185 transitions. Word has length 123 [2020-10-27 14:17:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:20,401 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 185 transitions. [2020-10-27 14:17:20,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:17:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 185 transitions. [2020-10-27 14:17:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:17:20,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:20,402 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:20,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:17:20,402 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:20,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1312740990, now seen corresponding path program 18 times [2020-10-27 14:17:20,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:20,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943833748] [2020-10-27 14:17:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:20,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:17:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 14:17:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:24,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:17:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:17:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:17:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:17:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:17:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:17:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:17:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 14:17:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:17:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:24,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:24,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:24,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 18 proven. 337 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 14:17:24,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943833748] [2020-10-27 14:17:24,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:24,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:17:24,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204778427] [2020-10-27 14:17:24,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:17:24,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:17:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:17:24,313 INFO L87 Difference]: Start difference. First operand 172 states and 185 transitions. Second operand 30 states. [2020-10-27 14:17:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:29,871 INFO L93 Difference]: Finished difference Result 266 states and 302 transitions. [2020-10-27 14:17:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-27 14:17:29,873 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 125 [2020-10-27 14:17:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:29,875 INFO L225 Difference]: With dead ends: 266 [2020-10-27 14:17:29,875 INFO L226 Difference]: Without dead ends: 263 [2020-10-27 14:17:29,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=240, Invalid=3182, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:17:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-27 14:17:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 174. [2020-10-27 14:17:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 14:17:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 188 transitions. [2020-10-27 14:17:29,922 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 188 transitions. Word has length 125 [2020-10-27 14:17:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:29,922 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 188 transitions. [2020-10-27 14:17:29,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:17:29,922 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 188 transitions. [2020-10-27 14:17:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 14:17:29,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:29,923 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:29,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:17:29,923 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash 746374976, now seen corresponding path program 19 times [2020-10-27 14:17:29,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:29,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082339458] [2020-10-27 14:17:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:29,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:30,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:31,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:33,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3942 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 14:17:33,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:17:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:17:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:17:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:17:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:17:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:17:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:17:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:17:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:17:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:35,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 18 proven. 340 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 14:17:35,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082339458] [2020-10-27 14:17:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:35,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:17:35,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637794729] [2020-10-27 14:17:35,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:17:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:17:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:17:35,276 INFO L87 Difference]: Start difference. First operand 174 states and 188 transitions. Second operand 33 states. [2020-10-27 14:17:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:42,651 INFO L93 Difference]: Finished difference Result 263 states and 298 transitions. [2020-10-27 14:17:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:17:42,653 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 127 [2020-10-27 14:17:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:42,655 INFO L225 Difference]: With dead ends: 263 [2020-10-27 14:17:42,655 INFO L226 Difference]: Without dead ends: 260 [2020-10-27 14:17:42,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=312, Invalid=3348, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 14:17:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-27 14:17:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 136. [2020-10-27 14:17:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 14:17:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2020-10-27 14:17:42,680 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 127 [2020-10-27 14:17:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:42,681 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2020-10-27 14:17:42,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:17:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2020-10-27 14:17:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 14:17:42,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:42,682 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:42,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:17:42,682 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash 441096933, now seen corresponding path program 19 times [2020-10-27 14:17:42,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:42,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702270330] [2020-10-27 14:17:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:42,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 14:17:44,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1571 [2020-10-27 14:17:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:17:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-27 14:17:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:17:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:17:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:17:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:17:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:17:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:17:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:17:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:17:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:17:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:44,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:17:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:44,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:44,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 220 proven. 176 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-27 14:17:44,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702270330] [2020-10-27 14:17:44,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:44,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:17:44,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426180603] [2020-10-27 14:17:44,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:17:44,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:17:44,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:17:44,846 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand 26 states. [2020-10-27 14:17:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:46,373 INFO L93 Difference]: Finished difference Result 275 states and 312 transitions. [2020-10-27 14:17:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:17:46,374 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 131 [2020-10-27 14:17:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:46,375 INFO L225 Difference]: With dead ends: 275 [2020-10-27 14:17:46,375 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 14:17:46,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=559, Invalid=1793, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:17:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 14:17:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2020-10-27 14:17:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:17:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-10-27 14:17:46,400 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 131 [2020-10-27 14:17:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:46,400 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-10-27 14:17:46,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:17:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-10-27 14:17:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 14:17:46,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:46,401 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:46,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-27 14:17:46,401 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1815141758, now seen corresponding path program 20 times [2020-10-27 14:17:46,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:46,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184424815] [2020-10-27 14:17:46,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:46,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:17:48,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:17:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2096 [2020-10-27 14:17:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:17:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:48,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 14:17:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:17:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:17:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:17:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:49,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:17:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:17:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:17:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:17:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:17:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:17:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:17:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:49,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:49,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:49,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 20 proven. 408 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 14:17:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184424815] [2020-10-27 14:17:49,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:49,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:17:49,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083474254] [2020-10-27 14:17:49,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:17:49,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:17:49,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:17:49,589 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 30 states. [2020-10-27 14:17:53,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:17:53,528 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2020-10-27 14:17:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:17:53,529 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 134 [2020-10-27 14:17:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:17:53,531 INFO L225 Difference]: With dead ends: 230 [2020-10-27 14:17:53,531 INFO L226 Difference]: Without dead ends: 227 [2020-10-27 14:17:53,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=125, Invalid=1945, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:17:53,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-27 14:17:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 187. [2020-10-27 14:17:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 14:17:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-10-27 14:17:53,580 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 134 [2020-10-27 14:17:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:17:53,581 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-10-27 14:17:53,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:17:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-10-27 14:17:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 14:17:53,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:17:53,583 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:17:53,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-27 14:17:53,583 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:17:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:17:53,583 INFO L82 PathProgramCache]: Analyzing trace with hash -164793728, now seen corresponding path program 20 times [2020-10-27 14:17:53,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:17:53,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768062465] [2020-10-27 14:17:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:17:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:54,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:57,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:57,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 14:17:57,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3765 [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 14:17:57,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:17:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:17:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:17:58,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:17:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:17:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:17:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:17:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:17:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:17:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:17:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:17:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:17:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:58,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:17:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:17:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:17:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:17:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:17:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:17:58,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:17:58,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:17:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:17:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 20 proven. 409 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 14:17:58,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768062465] [2020-10-27 14:17:58,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:17:58,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 14:17:58,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813635800] [2020-10-27 14:17:58,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 14:17:58,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:17:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 14:17:58,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:17:58,785 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 32 states. [2020-10-27 14:18:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:05,055 INFO L93 Difference]: Finished difference Result 288 states and 327 transitions. [2020-10-27 14:18:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-27 14:18:05,056 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 136 [2020-10-27 14:18:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:05,058 INFO L225 Difference]: With dead ends: 288 [2020-10-27 14:18:05,058 INFO L226 Difference]: Without dead ends: 285 [2020-10-27 14:18:05,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=252, Invalid=3530, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 14:18:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-27 14:18:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 189. [2020-10-27 14:18:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-27 14:18:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2020-10-27 14:18:05,113 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 136 [2020-10-27 14:18:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:05,113 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2020-10-27 14:18:05,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 14:18:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2020-10-27 14:18:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 14:18:05,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:05,115 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:18:05,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-27 14:18:05,115 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:05,116 INFO L82 PathProgramCache]: Analyzing trace with hash -212283646, now seen corresponding path program 21 times [2020-10-27 14:18:05,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:05,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898396533] [2020-10-27 14:18:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:05,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:05,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4231 [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 14:18:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:18:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 14:18:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:18:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:18:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:18:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:18:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:18:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:18:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:18:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:18:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:18:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:18:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:18:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:18:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:10,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:18:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:10,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:10,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:10,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 20 proven. 412 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-10-27 14:18:11,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898396533] [2020-10-27 14:18:11,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:18:11,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:18:11,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700468818] [2020-10-27 14:18:11,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:18:11,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:18:11,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:18:11,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=990, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:18:11,034 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand 33 states. [2020-10-27 14:18:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:18,186 INFO L93 Difference]: Finished difference Result 288 states and 327 transitions. [2020-10-27 14:18:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:18:18,187 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 138 [2020-10-27 14:18:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:18,189 INFO L225 Difference]: With dead ends: 288 [2020-10-27 14:18:18,189 INFO L226 Difference]: Without dead ends: 285 [2020-10-27 14:18:18,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=299, Invalid=3733, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 14:18:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-27 14:18:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 147. [2020-10-27 14:18:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:18:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 150 transitions. [2020-10-27 14:18:18,220 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 150 transitions. Word has length 138 [2020-10-27 14:18:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:18,221 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 150 transitions. [2020-10-27 14:18:18,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:18:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 150 transitions. [2020-10-27 14:18:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 14:18:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:18,222 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:18:18,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-27 14:18:18,222 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:18,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1875409191, now seen corresponding path program 21 times [2020-10-27 14:18:18,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:18,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095903869] [2020-10-27 14:18:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:18,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:18:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:18:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-27 14:18:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:18:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:18:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-27 14:18:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:18:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:18:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:18:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:18:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:18:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:18:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:18:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:18:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:18:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:20,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:18:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:20,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:18:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:18:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:18:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:18:20,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:18:20,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:18:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 264 proven. 210 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-27 14:18:20,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095903869] [2020-10-27 14:18:20,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:18:20,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:18:20,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62471926] [2020-10-27 14:18:20,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:18:20,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:18:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:18:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:18:20,731 INFO L87 Difference]: Start difference. First operand 147 states and 150 transitions. Second operand 28 states. [2020-10-27 14:18:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:18:22,812 INFO L93 Difference]: Finished difference Result 297 states and 337 transitions. [2020-10-27 14:18:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:18:22,815 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 142 [2020-10-27 14:18:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:18:22,816 INFO L225 Difference]: With dead ends: 297 [2020-10-27 14:18:22,816 INFO L226 Difference]: Without dead ends: 187 [2020-10-27 14:18:22,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=651, Invalid=2105, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:18:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-27 14:18:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 150. [2020-10-27 14:18:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-27 14:18:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2020-10-27 14:18:22,857 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 142 [2020-10-27 14:18:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:18:22,857 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2020-10-27 14:18:22,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:18:22,858 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2020-10-27 14:18:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:18:22,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:18:22,859 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:18:22,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-27 14:18:22,859 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:18:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:18:22,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2012269806, now seen corresponding path program 22 times [2020-10-27 14:18:22,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:18:22,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303945718] [2020-10-27 14:18:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:18:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:18:22,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:18:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking...