/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=SHALLOWEST --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-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:57:07,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:57:07,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:57:07,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:57:07,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:57:07,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:57:07,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:57:07,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:57:07,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:57:07,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:57:07,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:57:07,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:57:07,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:57:07,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:57:07,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:57:07,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:57:07,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:57:08,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:57:08,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:57:08,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:57:08,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:57:08,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:57:08,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:57:08,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:57:08,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:57:08,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:57:08,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:57:08,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:57:08,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:57:08,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:57:08,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:57:08,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:57:08,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:57:08,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:57:08,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:57:08,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:57:08,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:57:08,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:57:08,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:57:08,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:57:08,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:57:08,084 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 [2020-10-26 19:57:08,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:57:08,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:57:08,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:57:08,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:57:08,142 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:57:08,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:57:08,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:57:08,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:57:08,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:57:08,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:57:08,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:57:08,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:57:08,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:57:08,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:57:08,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:57:08,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:57:08,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:57:08,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:57:08,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:57:08,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:57:08,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:57:08,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:57:08,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:57:08,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:57:08,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:57:08,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:57:08,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:57:08,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:57:08,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:57:08,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:57:08,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:57:08,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:57:08,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:57:08,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:57:08,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:57:08,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-26 19:57:08,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe7033d/71250fc3ed3649dea944b8dacfdd2c08/FLAG8052a9da1 [2020-10-26 19:57:09,274 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:57:09,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewrev.c [2020-10-26 19:57:09,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe7033d/71250fc3ed3649dea944b8dacfdd2c08/FLAG8052a9da1 [2020-10-26 19:57:09,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dbe7033d/71250fc3ed3649dea944b8dacfdd2c08 [2020-10-26 19:57:09,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:57:09,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:57:09,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:57:09,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:57:09,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:57:09,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c24e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09, skipping insertion in model container [2020-10-26 19:57:09,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:57:09,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:57:09,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:57:09,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:57:09,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:57:09,922 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:57:09,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09 WrapperNode [2020-10-26 19:57:09,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:57:09,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:57:09,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:57:09,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:57:09,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:09,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:10,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:10,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (1/1) ... [2020-10-26 19:57:10,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:57:10,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:57:10,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:57:10,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:57:10,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (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 [2020-10-26 19:57:10,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:57:10,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:57:10,112 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:57:10,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:57:10,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:57:10,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:57:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:57:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:57:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:57:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:57:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:57:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:57:10,426 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:57:10,427 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 19:57:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:57:10 BoogieIcfgContainer [2020-10-26 19:57:10,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:57:10,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:57:10,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:57:10,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:57:10,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:57:09" (1/3) ... [2020-10-26 19:57:10,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d3582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:57:10, skipping insertion in model container [2020-10-26 19:57:10,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:57:09" (2/3) ... [2020-10-26 19:57:10,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d3582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:57:10, skipping insertion in model container [2020-10-26 19:57:10,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:57:10" (3/3) ... [2020-10-26 19:57:10,442 INFO L111 eAbstractionObserver]: Analyzing ICFG rewrev.c [2020-10-26 19:57:10,465 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:57:10,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:57:10,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:57:10,588 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:57:10,588 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:57:10,588 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:57:10,588 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:57:10,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:57:10,589 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:57:10,589 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:57:10,589 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:57:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-26 19:57:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 19:57:10,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:10,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:10,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1534732962, now seen corresponding path program 1 times [2020-10-26 19:57:10,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:10,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960244934] [2020-10-26 19:57:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-26 19:57:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 19:57:11,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 19:57:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 19:57:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:11,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:11,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:11,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 19:57:11,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:11,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:11,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:11,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:57:11,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960244934] [2020-10-26 19:57:11,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:57:11,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 19:57:11,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826072077] [2020-10-26 19:57:11,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 19:57:11,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:11,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 19:57:11,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:57:11,243 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-26 19:57:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:11,336 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-26 19:57:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 19:57:11,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-26 19:57:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:11,346 INFO L225 Difference]: With dead ends: 48 [2020-10-26 19:57:11,347 INFO L226 Difference]: Without dead ends: 23 [2020-10-26 19:57:11,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 19:57:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-26 19:57:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-26 19:57:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-26 19:57:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-26 19:57:11,412 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-26 19:57:11,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:11,412 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-26 19:57:11,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 19:57:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-26 19:57:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 19:57:11,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:11,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:11,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:57:11,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:11,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:11,415 INFO L82 PathProgramCache]: Analyzing trace with hash 353035087, now seen corresponding path program 1 times [2020-10-26 19:57:11,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:11,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65165976] [2020-10-26 19:57:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:11,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-26 19:57:11,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:11,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-26 19:57:11,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:11,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 19:57:11,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:11,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:57:11,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65165976] [2020-10-26 19:57:11,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:57:11,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 19:57:11,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796417364] [2020-10-26 19:57:11,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 19:57:11,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:11,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 19:57:11,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 19:57:11,716 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-10-26 19:57:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:11,795 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-26 19:57:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 19:57:11,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-26 19:57:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:11,797 INFO L225 Difference]: With dead ends: 43 [2020-10-26 19:57:11,797 INFO L226 Difference]: Without dead ends: 27 [2020-10-26 19:57:11,798 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 [2020-10-26 19:57:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-26 19:57:11,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-26 19:57:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-26 19:57:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-26 19:57:11,811 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2020-10-26 19:57:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:11,811 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-26 19:57:11,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 19:57:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-26 19:57:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 19:57:11,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:11,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:11,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:57:11,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:11,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:11,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1307166964, now seen corresponding path program 1 times [2020-10-26 19:57:11,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:11,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242506018] [2020-10-26 19:57:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-26 19:57:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 19:57:12,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:57:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:12,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:12,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 19:57:12,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:12,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:12,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:57:12,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242506018] [2020-10-26 19:57:12,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:12,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 19:57:12,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062718027] [2020-10-26 19:57:12,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:57:12,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:57:12,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:57:12,241 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-26 19:57:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:12,456 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-26 19:57:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 19:57:12,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-26 19:57:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:12,460 INFO L225 Difference]: With dead ends: 40 [2020-10-26 19:57:12,460 INFO L226 Difference]: Without dead ends: 28 [2020-10-26 19:57:12,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:57:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-26 19:57:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-26 19:57:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-26 19:57:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-26 19:57:12,477 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-10-26 19:57:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:12,478 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-26 19:57:12,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:57:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-26 19:57:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:57:12,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:12,480 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] [2020-10-26 19:57:12,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 19:57:12,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1246971493, now seen corresponding path program 1 times [2020-10-26 19:57:12,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:12,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022678318] [2020-10-26 19:57:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:14,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:14,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 19:57:14,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:57:14,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1639 [2020-10-26 19:57:14,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 19:57:14,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:14,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 19:57:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:57:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:14,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 19:57:14,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022678318] [2020-10-26 19:57:14,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:14,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-26 19:57:14,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914089070] [2020-10-26 19:57:14,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 19:57:14,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:14,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 19:57:14,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-26 19:57:14,710 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-26 19:57:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:15,487 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-26 19:57:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 19:57:15,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-26 19:57:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:15,489 INFO L225 Difference]: With dead ends: 39 [2020-10-26 19:57:15,490 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 19:57:15,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:57:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 19:57:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-26 19:57:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 19:57:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-26 19:57:15,501 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2020-10-26 19:57:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:15,502 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-26 19:57:15,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 19:57:15,502 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-26 19:57:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 19:57:15,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:15,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:15,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 19:57:15,504 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1268347716, now seen corresponding path program 1 times [2020-10-26 19:57:15,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:15,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239432698] [2020-10-26 19:57:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:15,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:16,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-26 19:57:16,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:57:16,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-26 19:57:16,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:57:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:16,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 19:57:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:17,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:17,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-26 19:57:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:17,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:17,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:17,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:57:17,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1239432698] [2020-10-26 19:57:17,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:17,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:57:17,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919961426] [2020-10-26 19:57:17,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:57:17,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:17,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:57:17,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:57:17,190 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 13 states. [2020-10-26 19:57:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:17,881 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-26 19:57:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:57:17,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-26 19:57:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:17,887 INFO L225 Difference]: With dead ends: 62 [2020-10-26 19:57:17,888 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 19:57:17,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:57:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 19:57:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2020-10-26 19:57:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 19:57:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-26 19:57:17,908 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 31 [2020-10-26 19:57:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:17,909 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-26 19:57:17,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:57:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-26 19:57:17,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-26 19:57:17,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:17,911 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-26 19:57:17,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 19:57:17,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash -108368151, now seen corresponding path program 2 times [2020-10-26 19:57:17,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:17,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473950724] [2020-10-26 19:57:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:18,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-26 19:57:20,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:20,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2152 [2020-10-26 19:57:20,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-26 19:57:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:20,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 19:57:20,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:20,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:57:20,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:57:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:20,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:20,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:20,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:20,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:20,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:20,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:20,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:20,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 19:57:20,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473950724] [2020-10-26 19:57:20,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:20,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:57:20,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663248774] [2020-10-26 19:57:20,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:57:20,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:20,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:57:20,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:57:20,398 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 14 states. [2020-10-26 19:57:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:21,276 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2020-10-26 19:57:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:57:21,277 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-26 19:57:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:21,280 INFO L225 Difference]: With dead ends: 67 [2020-10-26 19:57:21,280 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 19:57:21,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:57:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 19:57:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-10-26 19:57:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 19:57:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-26 19:57:21,307 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 35 [2020-10-26 19:57:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:21,309 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-26 19:57:21,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:57:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-26 19:57:21,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-26 19:57:21,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:21,314 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:21,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 19:57:21,315 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1964346387, now seen corresponding path program 3 times [2020-10-26 19:57:21,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:21,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474506506] [2020-10-26 19:57:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-26 19:57:21,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:21,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-26 19:57:21,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:21,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 19:57:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:21,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 19:57:21,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:21,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:21,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:57:21,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:21,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:21,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-26 19:57:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:57:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:21,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:21,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:21,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:21,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:21,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:57:21,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474506506] [2020-10-26 19:57:21,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:21,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 19:57:21,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391353278] [2020-10-26 19:57:21,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 19:57:21,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 19:57:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 19:57:21,970 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 10 states. [2020-10-26 19:57:22,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:22,350 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2020-10-26 19:57:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 19:57:22,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-26 19:57:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:22,354 INFO L225 Difference]: With dead ends: 90 [2020-10-26 19:57:22,354 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 19:57:22,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:57:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 19:57:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2020-10-26 19:57:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 19:57:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-26 19:57:22,374 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 39 [2020-10-26 19:57:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:22,374 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-26 19:57:22,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 19:57:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-26 19:57:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-26 19:57:22,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:22,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:22,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 19:57:22,379 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:22,380 INFO L82 PathProgramCache]: Analyzing trace with hash -238290286, now seen corresponding path program 4 times [2020-10-26 19:57:22,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:22,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736368382] [2020-10-26 19:57:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:23,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:25,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3246 [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:25,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:25,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 19:57:25,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:26,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-26 19:57:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:26,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:26,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:26,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:57:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:26,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:26,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 19:57:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:26,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:26,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:26,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:26,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:57:26,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:26,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 19:57:26,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736368382] [2020-10-26 19:57:26,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:26,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:57:26,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737552379] [2020-10-26 19:57:26,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:57:26,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:57:26,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:57:26,110 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 14 states. [2020-10-26 19:57:26,930 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-26 19:57:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:27,266 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-10-26 19:57:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 19:57:27,267 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-26 19:57:27,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:27,268 INFO L225 Difference]: With dead ends: 76 [2020-10-26 19:57:27,268 INFO L226 Difference]: Without dead ends: 56 [2020-10-26 19:57:27,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-10-26 19:57:27,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-26 19:57:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-26 19:57:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 19:57:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-26 19:57:27,279 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 43 [2020-10-26 19:57:27,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:27,280 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-26 19:57:27,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:57:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-26 19:57:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-26 19:57:27,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:27,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:27,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 19:57:27,281 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1771022007, now seen corresponding path program 5 times [2020-10-26 19:57:27,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:27,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668036908] [2020-10-26 19:57:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-26 19:57:30,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:57:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2699 [2020-10-26 19:57:30,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 19:57:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-26 19:57:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:30,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:30,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:30,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:30,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:30,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:30,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:30,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:57:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:30,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:30,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:30,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:30,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:30,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:30,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:30,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:30,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:30,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 19:57:30,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668036908] [2020-10-26 19:57:30,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:30,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-26 19:57:30,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087581638] [2020-10-26 19:57:30,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 19:57:30,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:30,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 19:57:30,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-26 19:57:30,350 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 14 states. [2020-10-26 19:57:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:31,585 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-26 19:57:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:57:31,586 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-26 19:57:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:31,587 INFO L225 Difference]: With dead ends: 68 [2020-10-26 19:57:31,587 INFO L226 Difference]: Without dead ends: 65 [2020-10-26 19:57:31,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:57:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-26 19:57:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-10-26 19:57:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-26 19:57:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-10-26 19:57:31,609 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 47 [2020-10-26 19:57:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:31,610 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-10-26 19:57:31,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 19:57:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-10-26 19:57:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 19:57:31,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:31,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:31,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 19:57:31,615 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:31,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1883536288, now seen corresponding path program 6 times [2020-10-26 19:57:31,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:31,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421552960] [2020-10-26 19:57:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:32,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:33,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 19:57:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3741 [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-26 19:57:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:35,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-26 19:57:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:57:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:57:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:35,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:35,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:35,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:35,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:57:35,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:35,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:35,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-26 19:57:35,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421552960] [2020-10-26 19:57:35,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:35,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:57:35,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577264006] [2020-10-26 19:57:35,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:57:35,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:35,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:57:35,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:57:35,947 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-10-26 19:57:37,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:37,001 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-26 19:57:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:57:37,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-26 19:57:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:37,004 INFO L225 Difference]: With dead ends: 121 [2020-10-26 19:57:37,004 INFO L226 Difference]: Without dead ends: 97 [2020-10-26 19:57:37,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2020-10-26 19:57:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-26 19:57:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-10-26 19:57:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-26 19:57:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-26 19:57:37,031 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 55 [2020-10-26 19:57:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:37,031 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-26 19:57:37,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:57:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-26 19:57:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-26 19:57:37,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:37,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:37,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 19:57:37,033 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:37,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash -62054139, now seen corresponding path program 7 times [2020-10-26 19:57:37,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:37,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686932908] [2020-10-26 19:57:37,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:37,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 19:57:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 19:57:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:42,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:42,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:42,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:42,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:42,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:42,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:42,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:42,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:42,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:42,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:42,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:42,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 19:57:42,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686932908] [2020-10-26 19:57:42,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:42,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-26 19:57:42,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431914474] [2020-10-26 19:57:42,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 19:57:42,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:42,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 19:57:42,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-26 19:57:42,574 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 15 states. [2020-10-26 19:57:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:44,265 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-26 19:57:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 19:57:44,265 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-26 19:57:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:44,267 INFO L225 Difference]: With dead ends: 91 [2020-10-26 19:57:44,267 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 19:57:44,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 19:57:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 19:57:44,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2020-10-26 19:57:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:57:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-10-26 19:57:44,282 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 59 [2020-10-26 19:57:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:44,283 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-10-26 19:57:44,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 19:57:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-10-26 19:57:44,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 19:57:44,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:44,284 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:44,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 19:57:44,284 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:44,285 INFO L82 PathProgramCache]: Analyzing trace with hash -549924690, now seen corresponding path program 8 times [2020-10-26 19:57:44,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:44,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787438062] [2020-10-26 19:57:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-26 19:57:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:49,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 19:57:49,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:49,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:49,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:49,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:49,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:49,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:49,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:49,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:49,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:49,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:57:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:49,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:49,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:49,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 8 proven. 77 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-26 19:57:49,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787438062] [2020-10-26 19:57:49,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:49,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:57:49,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159452966] [2020-10-26 19:57:49,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:57:49,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:49,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:57:49,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:57:49,956 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 17 states. [2020-10-26 19:57:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:52,550 INFO L93 Difference]: Finished difference Result 124 states and 139 transitions. [2020-10-26 19:57:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:57:52,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-10-26 19:57:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:52,556 INFO L225 Difference]: With dead ends: 124 [2020-10-26 19:57:52,556 INFO L226 Difference]: Without dead ends: 121 [2020-10-26 19:57:52,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=363, Invalid=1707, Unknown=0, NotChecked=0, Total=2070 [2020-10-26 19:57:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-26 19:57:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2020-10-26 19:57:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 19:57:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2020-10-26 19:57:52,584 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 67 [2020-10-26 19:57:52,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:52,584 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2020-10-26 19:57:52,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:57:52,584 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2020-10-26 19:57:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-26 19:57:52,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:52,586 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:52,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 19:57:52,586 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:52,587 INFO L82 PathProgramCache]: Analyzing trace with hash -903013072, now seen corresponding path program 9 times [2020-10-26 19:57:52,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:52,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056318231] [2020-10-26 19:57:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:55,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-26 19:57:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:57,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:57,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:57,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:57,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:57,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:57,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:57:57,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:57,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:57:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 27 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-26 19:57:57,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056318231] [2020-10-26 19:57:57,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:57,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 19:57:57,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74675352] [2020-10-26 19:57:57,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 19:57:57,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:57,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 19:57:57,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-26 19:57:57,750 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand 11 states. [2020-10-26 19:57:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:58,176 INFO L93 Difference]: Finished difference Result 173 states and 187 transitions. [2020-10-26 19:57:58,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 19:57:58,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-26 19:57:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:58,178 INFO L225 Difference]: With dead ends: 173 [2020-10-26 19:57:58,178 INFO L226 Difference]: Without dead ends: 80 [2020-10-26 19:57:58,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:57:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-26 19:57:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-26 19:57:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 19:57:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-26 19:57:58,191 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 67 [2020-10-26 19:57:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:58,191 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-26 19:57:58,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 19:57:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-26 19:57:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-26 19:57:58,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:58,193 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:58,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 19:57:58,193 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:58,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1345505111, now seen corresponding path program 10 times [2020-10-26 19:57:58,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:58,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211068664] [2020-10-26 19:57:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 19:57:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:57:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 19:57:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:57:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:57:59,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:59,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:57:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:57:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-26 19:57:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:59,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:59,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:57:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:59,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:59,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:59,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:57:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:59,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:57:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:57:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:57:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:57:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:57:59,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:57:59,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:57:59,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:57:59,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 19:57:59,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:57:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:57:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:57:59,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:57:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 19:57:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:57:59,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211068664] [2020-10-26 19:57:59,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:57:59,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 19:57:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514611631] [2020-10-26 19:57:59,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 19:57:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:57:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 19:57:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-26 19:57:59,117 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 13 states. [2020-10-26 19:57:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:57:59,825 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2020-10-26 19:57:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 19:57:59,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-10-26 19:57:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:57:59,827 INFO L225 Difference]: With dead ends: 150 [2020-10-26 19:57:59,827 INFO L226 Difference]: Without dead ends: 90 [2020-10-26 19:57:59,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:57:59,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-26 19:57:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-26 19:57:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-26 19:57:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-26 19:57:59,847 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 75 [2020-10-26 19:57:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:57:59,848 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-26 19:57:59,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 19:57:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-26 19:57:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-26 19:57:59,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:57:59,855 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:57:59,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 19:57:59,855 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:57:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:57:59,856 INFO L82 PathProgramCache]: Analyzing trace with hash 510959484, now seen corresponding path program 11 times [2020-10-26 19:57:59,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:57:59,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538471781] [2020-10-26 19:57:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:57:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:57:59,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:00,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:03,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:04,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:04,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 19:58:04,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 19:58:04,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 19:58:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:58:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:58:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:05,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:05,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:05,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 50 proven. 76 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-26 19:58:05,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538471781] [2020-10-26 19:58:05,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:05,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:58:05,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704220144] [2020-10-26 19:58:05,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:58:05,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:58:05,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:58:05,607 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 17 states. [2020-10-26 19:58:07,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:07,341 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-26 19:58:07,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 19:58:07,341 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-26 19:58:07,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:07,343 INFO L225 Difference]: With dead ends: 124 [2020-10-26 19:58:07,344 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 19:58:07,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:58:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 19:58:07,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-10-26 19:58:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-26 19:58:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-26 19:58:07,358 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 79 [2020-10-26 19:58:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:07,358 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-26 19:58:07,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:58:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-26 19:58:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-26 19:58:07,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:07,359 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:07,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 19:58:07,360 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash -904667871, now seen corresponding path program 12 times [2020-10-26 19:58:07,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:07,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200890218] [2020-10-26 19:58:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 19:58:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:12,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:12,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:12,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:12,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:13,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:13,038 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 138 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-26 19:58:13,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200890218] [2020-10-26 19:58:13,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-26 19:58:13,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279701711] [2020-10-26 19:58:13,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 19:58:13,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:13,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 19:58:13,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-26 19:58:13,040 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 17 states. [2020-10-26 19:58:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:15,691 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-10-26 19:58:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:58:15,691 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-10-26 19:58:15,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:15,693 INFO L225 Difference]: With dead ends: 104 [2020-10-26 19:58:15,693 INFO L226 Difference]: Without dead ends: 101 [2020-10-26 19:58:15,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=357, Invalid=1713, Unknown=0, NotChecked=0, Total=2070 [2020-10-26 19:58:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-26 19:58:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-10-26 19:58:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-26 19:58:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-26 19:58:15,712 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 83 [2020-10-26 19:58:15,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:15,712 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-26 19:58:15,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 19:58:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-26 19:58:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-26 19:58:15,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:15,714 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:15,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 19:58:15,714 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:15,714 INFO L82 PathProgramCache]: Analyzing trace with hash -20278, now seen corresponding path program 13 times [2020-10-26 19:58:15,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:15,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714824198] [2020-10-26 19:58:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:16,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:20,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 19:58:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:21,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 19:58:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:21,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:21,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 52 proven. 123 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-26 19:58:21,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714824198] [2020-10-26 19:58:21,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:21,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:21,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906599649] [2020-10-26 19:58:21,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:21,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:21,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:21,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:21,679 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 19 states. [2020-10-26 19:58:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:23,493 INFO L93 Difference]: Finished difference Result 151 states and 165 transitions. [2020-10-26 19:58:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-26 19:58:23,493 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2020-10-26 19:58:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:23,495 INFO L225 Difference]: With dead ends: 151 [2020-10-26 19:58:23,495 INFO L226 Difference]: Without dead ends: 115 [2020-10-26 19:58:23,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 19:58:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-26 19:58:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 98. [2020-10-26 19:58:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-26 19:58:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-26 19:58:23,512 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 91 [2020-10-26 19:58:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:23,513 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-26 19:58:23,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-26 19:58:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-26 19:58:23,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:23,515 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:23,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 19:58:23,516 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 673095407, now seen corresponding path program 14 times [2020-10-26 19:58:23,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:23,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459158265] [2020-10-26 19:58:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:25,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:26,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:28,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 19:58:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:29,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:29,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:58:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:58:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:58:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:58:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:29,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:29,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:29,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:29,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:29,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:29,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 189 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-26 19:58:29,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459158265] [2020-10-26 19:58:29,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:29,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-26 19:58:29,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468446483] [2020-10-26 19:58:29,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 19:58:29,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:29,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 19:58:29,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-26 19:58:29,337 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 18 states. [2020-10-26 19:58:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:32,698 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2020-10-26 19:58:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-26 19:58:32,699 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2020-10-26 19:58:32,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:32,700 INFO L225 Difference]: With dead ends: 118 [2020-10-26 19:58:32,700 INFO L226 Difference]: Without dead ends: 115 [2020-10-26 19:58:32,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 17 SyntacticMatches, 13 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=454, Invalid=2198, Unknown=0, NotChecked=0, Total=2652 [2020-10-26 19:58:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-26 19:58:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2020-10-26 19:58:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 19:58:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-26 19:58:32,713 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 95 [2020-10-26 19:58:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:32,714 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-26 19:58:32,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 19:58:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-26 19:58:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-26 19:58:32,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:32,715 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:32,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 19:58:32,715 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:32,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:32,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1697987432, now seen corresponding path program 15 times [2020-10-26 19:58:32,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:32,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167384456] [2020-10-26 19:58:32,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 19:58:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 19:58:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-26 19:58:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:58:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:58:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:58:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:58:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:58:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:58:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:38,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:38,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 98 proven. 134 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 19:58:38,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167384456] [2020-10-26 19:58:38,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:38,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:38,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675892674] [2020-10-26 19:58:38,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:38,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:38,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:38,931 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 19 states. [2020-10-26 19:58:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:40,868 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2020-10-26 19:58:40,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-26 19:58:40,869 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 103 [2020-10-26 19:58:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:40,871 INFO L225 Difference]: With dead ends: 171 [2020-10-26 19:58:40,871 INFO L226 Difference]: Without dead ends: 131 [2020-10-26 19:58:40,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 17 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 19:58:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-26 19:58:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-10-26 19:58:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-26 19:58:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2020-10-26 19:58:40,887 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 103 [2020-10-26 19:58:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:40,887 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2020-10-26 19:58:40,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2020-10-26 19:58:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-26 19:58:40,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:40,889 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:40,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 19:58:40,889 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:40,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash -823876803, now seen corresponding path program 16 times [2020-10-26 19:58:40,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:40,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414734354] [2020-10-26 19:58:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 19:58:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:46,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:58:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:46,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:46,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:46,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:46,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 14 proven. 248 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-26 19:58:46,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414734354] [2020-10-26 19:58:46,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:46,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-26 19:58:46,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115491876] [2020-10-26 19:58:46,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-26 19:58:46,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:46,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-26 19:58:46,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-26 19:58:46,832 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand 19 states. [2020-10-26 19:58:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:58:50,603 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2020-10-26 19:58:50,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 19:58:50,604 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 107 [2020-10-26 19:58:50,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:58:50,606 INFO L225 Difference]: With dead ends: 132 [2020-10-26 19:58:50,606 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 19:58:50,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 19 SyntacticMatches, 16 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=559, Invalid=2633, Unknown=0, NotChecked=0, Total=3192 [2020-10-26 19:58:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 19:58:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2020-10-26 19:58:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-26 19:58:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2020-10-26 19:58:50,622 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 107 [2020-10-26 19:58:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:58:50,623 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2020-10-26 19:58:50,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-26 19:58:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2020-10-26 19:58:50,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 19:58:50,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:58:50,624 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:58:50,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 19:58:50,625 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:58:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:58:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1512479462, now seen corresponding path program 17 times [2020-10-26 19:58:50,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:58:50,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198861500] [2020-10-26 19:58:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:58:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:55,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-26 19:58:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:58:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 19:58:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:58:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:58:56,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:58:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:58:56,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:58:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:56,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:58:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:58:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:56,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:58:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:58:56,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:58:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:58:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:58:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:58:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:58:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:58:56,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:58:56,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:58:56,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:58:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:58:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 16 proven. 281 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-26 19:58:56,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198861500] [2020-10-26 19:58:56,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:58:56,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-26 19:58:56,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670690065] [2020-10-26 19:58:56,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-26 19:58:56,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:58:56,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-26 19:58:56,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-26 19:58:56,868 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand 20 states. [2020-10-26 19:59:00,127 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-26 19:59:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:02,362 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2020-10-26 19:59:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-26 19:59:02,363 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-10-26 19:59:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:02,365 INFO L225 Difference]: With dead ends: 149 [2020-10-26 19:59:02,365 INFO L226 Difference]: Without dead ends: 146 [2020-10-26 19:59:02,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 21 SyntacticMatches, 20 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=751, Invalid=3409, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 19:59:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-26 19:59:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2020-10-26 19:59:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-26 19:59:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2020-10-26 19:59:02,382 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 115 [2020-10-26 19:59:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:02,383 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2020-10-26 19:59:02,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-26 19:59:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2020-10-26 19:59:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-26 19:59:02,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:02,384 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:02,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 19:59:02,385 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:02,385 INFO L82 PathProgramCache]: Analyzing trace with hash -55649905, now seen corresponding path program 18 times [2020-10-26 19:59:02,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:02,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699944526] [2020-10-26 19:59:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:02,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 19:59:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1380 [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 19:59:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:03,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:03,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:03,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:03,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:03,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-26 19:59:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:59:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:59:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:59:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:59:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:59:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:59:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:59:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:04,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:04,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:04,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:59:04,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699944526] [2020-10-26 19:59:04,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:04,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-26 19:59:04,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114591699] [2020-10-26 19:59:04,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 19:59:04,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:04,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 19:59:04,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-26 19:59:04,076 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand 16 states. [2020-10-26 19:59:04,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:04,952 INFO L93 Difference]: Finished difference Result 253 states and 267 transitions. [2020-10-26 19:59:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 19:59:04,956 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-10-26 19:59:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:04,958 INFO L225 Difference]: With dead ends: 253 [2020-10-26 19:59:04,958 INFO L226 Difference]: Without dead ends: 138 [2020-10-26 19:59:04,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-26 19:59:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-26 19:59:04,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-10-26 19:59:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-26 19:59:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-26 19:59:04,976 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2020-10-26 19:59:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:04,976 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-26 19:59:04,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 19:59:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-26 19:59:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-26 19:59:04,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:04,977 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:04,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 19:59:04,978 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash -305925196, now seen corresponding path program 19 times [2020-10-26 19:59:04,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:04,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503421753] [2020-10-26 19:59:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:05,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:10,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:10,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-26 19:59:10,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:59:10,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:59:10,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-26 19:59:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:10,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 19:59:10,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:11,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:11,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-26 19:59:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:59:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:59:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:59:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:59:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:59:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:59:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:11,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:11,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 162 proven. 208 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-26 19:59:11,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503421753] [2020-10-26 19:59:11,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:11,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:59:11,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874296874] [2020-10-26 19:59:11,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:59:11,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:11,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:59:11,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:59:11,809 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 21 states. [2020-10-26 19:59:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:13,781 INFO L93 Difference]: Finished difference Result 193 states and 207 transitions. [2020-10-26 19:59:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-26 19:59:13,784 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 127 [2020-10-26 19:59:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:13,785 INFO L225 Difference]: With dead ends: 193 [2020-10-26 19:59:13,785 INFO L226 Difference]: Without dead ends: 145 [2020-10-26 19:59:13,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 25 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2020-10-26 19:59:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-26 19:59:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2020-10-26 19:59:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-26 19:59:13,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-26 19:59:13,801 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 127 [2020-10-26 19:59:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:13,802 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-26 19:59:13,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:59:13,802 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-26 19:59:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 19:59:13,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:13,803 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:13,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 19:59:13,803 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1127910567, now seen corresponding path program 20 times [2020-10-26 19:59:13,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:13,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467843302] [2020-10-26 19:59:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:13,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:14,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:18,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-26 19:59:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 19:59:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 19:59:18,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-26 19:59:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-26 19:59:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:20,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:59:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:59:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:20,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:59:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:20,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:59:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:20,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:59:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:59:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:59:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:20,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:59:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:20,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:20,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 18 proven. 390 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-26 19:59:20,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467843302] [2020-10-26 19:59:20,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:20,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-26 19:59:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368580950] [2020-10-26 19:59:20,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 19:59:20,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:20,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 19:59:20,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-26 19:59:20,272 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 21 states. [2020-10-26 19:59:22,738 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-26 19:59:22,884 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-26 19:59:23,061 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-26 19:59:23,250 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 19:59:23,408 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-26 19:59:23,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-26 19:59:24,140 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-26 19:59:24,330 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-26 19:59:24,482 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-26 19:59:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:26,406 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2020-10-26 19:59:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-26 19:59:26,407 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 131 [2020-10-26 19:59:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:26,409 INFO L225 Difference]: With dead ends: 151 [2020-10-26 19:59:26,409 INFO L226 Difference]: Without dead ends: 148 [2020-10-26 19:59:26,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 23 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=759, Invalid=3401, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 19:59:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-26 19:59:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2020-10-26 19:59:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-26 19:59:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 145 transitions. [2020-10-26 19:59:26,429 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 145 transitions. Word has length 131 [2020-10-26 19:59:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 145 transitions. [2020-10-26 19:59:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 19:59:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 145 transitions. [2020-10-26 19:59:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-26 19:59:26,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:26,431 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:26,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 19:59:26,431 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:26,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:26,432 INFO L82 PathProgramCache]: Analyzing trace with hash 968068866, now seen corresponding path program 21 times [2020-10-26 19:59:26,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:26,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000058803] [2020-10-26 19:59:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:26,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:27,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:31,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:31,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-26 19:59:31,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:59:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 19:59:31,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-26 19:59:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:31,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-26 19:59:31,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-26 19:59:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:59:33,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 19:59:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 19:59:33,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 19:59:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 19:59:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:59:33,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 19:59:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 19:59:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 19:59:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 19:59:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 19:59:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 19:59:33,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 19:59:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:33,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:33,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:33,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:33,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 19:59:33,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:33,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:33,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 164 proven. 287 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-26 19:59:33,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000058803] [2020-10-26 19:59:33,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:33,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-26 19:59:33,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503102710] [2020-10-26 19:59:33,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 19:59:33,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:33,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 19:59:33,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-10-26 19:59:33,515 INFO L87 Difference]: Start difference. First operand 142 states and 145 transitions. Second operand 31 states. [2020-10-26 19:59:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:36,091 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2020-10-26 19:59:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-26 19:59:36,092 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 139 [2020-10-26 19:59:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:36,094 INFO L225 Difference]: With dead ends: 209 [2020-10-26 19:59:36,094 INFO L226 Difference]: Without dead ends: 157 [2020-10-26 19:59:36,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 18 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=549, Invalid=1803, Unknown=0, NotChecked=0, Total=2352 [2020-10-26 19:59:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-26 19:59:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2020-10-26 19:59:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-26 19:59:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2020-10-26 19:59:36,115 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 139 [2020-10-26 19:59:36,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:36,116 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 150 transitions. [2020-10-26 19:59:36,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 19:59:36,116 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 150 transitions. [2020-10-26 19:59:36,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:59:36,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:36,117 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:36,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-26 19:59:36,117 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1239531303, now seen corresponding path program 22 times [2020-10-26 19:59:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:36,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278501835] [2020-10-26 19:59:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:36,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-26 19:59:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 19:59:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:59:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:59:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:59:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:59:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:59:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:42,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:59:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:59:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:59:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 20 proven. 473 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-26 19:59:42,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278501835] [2020-10-26 19:59:42,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:42,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:59:42,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016354937] [2020-10-26 19:59:42,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:59:42,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:59:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:59:42,768 INFO L87 Difference]: Start difference. First operand 146 states and 150 transitions. Second operand 22 states. [2020-10-26 19:59:45,403 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-26 19:59:45,583 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-26 19:59:45,776 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-26 19:59:45,977 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 19:59:46,152 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-26 19:59:46,347 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-26 19:59:46,552 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-26 19:59:46,723 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-26 19:59:46,928 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-26 19:59:47,148 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-26 19:59:47,340 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-26 19:59:47,546 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-26 19:59:47,848 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-26 19:59:48,072 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-26 19:59:48,239 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-26 19:59:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:59:50,684 INFO L93 Difference]: Finished difference Result 217 states and 236 transitions. [2020-10-26 19:59:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 19:59:50,685 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 143 [2020-10-26 19:59:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:59:50,689 INFO L225 Difference]: With dead ends: 217 [2020-10-26 19:59:50,689 INFO L226 Difference]: Without dead ends: 214 [2020-10-26 19:59:50,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 25 SyntacticMatches, 26 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=951, Invalid=4451, Unknown=0, NotChecked=0, Total=5402 [2020-10-26 19:59:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-26 19:59:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2020-10-26 19:59:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-26 19:59:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 221 transitions. [2020-10-26 19:59:50,720 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 221 transitions. Word has length 143 [2020-10-26 19:59:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:59:50,721 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 221 transitions. [2020-10-26 19:59:50,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 19:59:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 221 transitions. [2020-10-26 19:59:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-26 19:59:50,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:59:50,723 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:59:50,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-26 19:59:50,723 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:59:50,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:59:50,724 INFO L82 PathProgramCache]: Analyzing trace with hash -673009877, now seen corresponding path program 23 times [2020-10-26 19:59:50,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:59:50,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887149073] [2020-10-26 19:59:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:59:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:50,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:50,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:55,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 19:59:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:59:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:59:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 19:59:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 19:59:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 19:59:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 19:59:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 19:59:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:57,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 19:59:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 19:59:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 19:59:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 19:59:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 19:59:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 19:59:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:59:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:59:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:59:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:59:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:59:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 19:59:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:59:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:59:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:59:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:59:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:59:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 20 proven. 473 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-26 19:59:57,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887149073] [2020-10-26 19:59:57,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 19:59:57,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-26 19:59:57,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046856400] [2020-10-26 19:59:57,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-26 19:59:57,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:59:57,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-26 19:59:57,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-26 19:59:57,308 INFO L87 Difference]: Start difference. First operand 204 states and 221 transitions. Second operand 22 states. [2020-10-26 20:00:00,313 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 20:00:00,527 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 20:00:01,308 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-26 20:00:01,579 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-26 20:00:01,839 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-26 20:00:02,124 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-26 20:00:02,371 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-26 20:00:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:04,679 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2020-10-26 20:00:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-26 20:00:04,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 143 [2020-10-26 20:00:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:04,683 INFO L225 Difference]: With dead ends: 221 [2020-10-26 20:00:04,683 INFO L226 Difference]: Without dead ends: 218 [2020-10-26 20:00:04,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 25 SyntacticMatches, 25 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1014, Invalid=4536, Unknown=0, NotChecked=0, Total=5550 [2020-10-26 20:00:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-26 20:00:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 154. [2020-10-26 20:00:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-26 20:00:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2020-10-26 20:00:04,710 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 143 [2020-10-26 20:00:04,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:04,710 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2020-10-26 20:00:04,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-26 20:00:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2020-10-26 20:00:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-26 20:00:04,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:04,712 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:04,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-26 20:00:04,712 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:04,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:04,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1181101264, now seen corresponding path program 24 times [2020-10-26 20:00:04,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:04,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586103152] [2020-10-26 20:00:04,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:09,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 20:00:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 20:00:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-26 20:00:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-26 20:00:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:12,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-26 20:00:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-26 20:00:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-26 20:00:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-26 20:00:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-26 20:00:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-26 20:00:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-26 20:00:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-26 20:00:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 202 proven. 338 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 20:00:12,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586103152] [2020-10-26 20:00:12,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:12,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-26 20:00:12,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059499450] [2020-10-26 20:00:12,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 20:00:12,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:12,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 20:00:12,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=659, Unknown=0, NotChecked=0, Total=930 [2020-10-26 20:00:12,344 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 31 states. [2020-10-26 20:00:13,099 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-26 20:00:13,426 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-26 20:00:15,815 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-26 20:00:16,019 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-26 20:00:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:16,423 INFO L93 Difference]: Finished difference Result 227 states and 246 transitions. [2020-10-26 20:00:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-26 20:00:16,423 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 151 [2020-10-26 20:00:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:16,426 INFO L225 Difference]: With dead ends: 227 [2020-10-26 20:00:16,426 INFO L226 Difference]: Without dead ends: 171 [2020-10-26 20:00:16,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 27 SyntacticMatches, 21 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=639, Invalid=2013, Unknown=0, NotChecked=0, Total=2652 [2020-10-26 20:00:16,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-26 20:00:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 158. [2020-10-26 20:00:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-26 20:00:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2020-10-26 20:00:16,444 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 151 [2020-10-26 20:00:16,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:16,444 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2020-10-26 20:00:16,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 20:00:16,444 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2020-10-26 20:00:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-26 20:00:16,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:16,446 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:16,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-26 20:00:16,446 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:16,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1950593675, now seen corresponding path program 25 times [2020-10-26 20:00:16,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:16,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273423528] [2020-10-26 20:00:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:17,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:18,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:21,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:21,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-26 20:00:21,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-26 20:00:21,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 20:00:21,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-26 20:00:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 20:00:21,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 20:00:21,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:23,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 20:00:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 20:00:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 20:00:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 20:00:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 20:00:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 20:00:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 20:00:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 20:00:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 20:00:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 20:00:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-26 20:00:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 22 proven. 564 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-26 20:00:23,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273423528] [2020-10-26 20:00:23,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:23,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-26 20:00:23,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968149716] [2020-10-26 20:00:23,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 20:00:23,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:23,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 20:00:23,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-26 20:00:23,374 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand 23 states. [2020-10-26 20:00:25,621 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-26 20:00:25,905 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-26 20:00:26,107 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-26 20:00:26,409 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-26 20:00:26,657 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-26 20:00:26,980 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-26 20:00:27,216 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-26 20:00:27,564 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-26 20:00:27,833 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-26 20:00:28,296 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-26 20:00:28,577 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-26 20:00:28,961 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-26 20:00:29,257 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-26 20:00:29,537 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-26 20:00:29,724 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-26 20:00:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:32,563 INFO L93 Difference]: Finished difference Result 180 states and 187 transitions. [2020-10-26 20:00:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-26 20:00:32,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 155 [2020-10-26 20:00:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:32,567 INFO L225 Difference]: With dead ends: 180 [2020-10-26 20:00:32,568 INFO L226 Difference]: Without dead ends: 177 [2020-10-26 20:00:32,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 27 SyntacticMatches, 28 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1025, Invalid=4827, Unknown=0, NotChecked=0, Total=5852 [2020-10-26 20:00:32,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-26 20:00:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 166. [2020-10-26 20:00:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-26 20:00:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2020-10-26 20:00:32,593 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 155 [2020-10-26 20:00:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:32,594 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2020-10-26 20:00:32,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 20:00:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2020-10-26 20:00:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-26 20:00:32,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:32,595 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:32,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-26 20:00:32,596 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:32,596 INFO L82 PathProgramCache]: Analyzing trace with hash 816614686, now seen corresponding path program 26 times [2020-10-26 20:00:32,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:32,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166501075] [2020-10-26 20:00:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:32,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:32,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:37,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-26 20:00:37,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 20:00:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 20:00:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-26 20:00:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-26 20:00:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 20:00:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-26 20:00:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-26 20:00:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-26 20:00:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-26 20:00:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 20:00:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-26 20:00:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 20:00:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-26 20:00:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:39,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-26 20:00:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:39,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 20:00:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 20:00:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 20:00:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 20:00:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 20:00:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 20:00:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 20:00:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 20:00:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 20:00:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 288 proven. 349 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-26 20:00:40,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166501075] [2020-10-26 20:00:40,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 20:00:40,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-26 20:00:40,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614974112] [2020-10-26 20:00:40,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 20:00:40,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 20:00:40,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 20:00:40,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-26 20:00:40,110 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand 24 states. [2020-10-26 20:00:40,644 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 20:00:40,986 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-26 20:00:41,297 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-26 20:00:43,761 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-26 20:00:43,912 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-26 20:00:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 20:00:44,221 INFO L93 Difference]: Finished difference Result 255 states and 279 transitions. [2020-10-26 20:00:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-26 20:00:44,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 163 [2020-10-26 20:00:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 20:00:44,224 INFO L225 Difference]: With dead ends: 255 [2020-10-26 20:00:44,224 INFO L226 Difference]: Without dead ends: 195 [2020-10-26 20:00:44,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 29 SyntacticMatches, 32 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=512, Invalid=1744, Unknown=0, NotChecked=0, Total=2256 [2020-10-26 20:00:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-26 20:00:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 170. [2020-10-26 20:00:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-26 20:00:44,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 176 transitions. [2020-10-26 20:00:44,252 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 176 transitions. Word has length 163 [2020-10-26 20:00:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 20:00:44,253 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 176 transitions. [2020-10-26 20:00:44,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 20:00:44,253 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 176 transitions. [2020-10-26 20:00:44,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 20:00:44,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 20:00:44,254 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 20:00:44,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-26 20:00:44,255 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 20:00:44,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 20:00:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1078320707, now seen corresponding path program 27 times [2020-10-26 20:00:44,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 20:00:44,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391661182] [2020-10-26 20:00:44,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 20:00:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 20:00:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:45,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 20:00:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking...