/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:07:16,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:07:16,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:07:16,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:07:16,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:07:16,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:07:16,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:07:16,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:07:16,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:07:16,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:07:16,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:07:16,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:07:16,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:07:16,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:07:16,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:07:16,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:07:16,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:07:16,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:07:16,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:07:16,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:07:16,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:07:16,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:07:16,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:07:16,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:07:16,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:07:16,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:07:16,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:07:16,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:07:16,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:07:16,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:07:16,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:07:16,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:07:16,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:07:16,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:07:16,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:07:16,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:07:16,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:07:16,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:07:16,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:07:16,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:07:16,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:07:16,267 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 [2020-10-29 04:07:16,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:07:16,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:07:16,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:07:16,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:07:16,299 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:07:16,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:07:16,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:07:16,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:07:16,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:07:16,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:07:16,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:07:16,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:07:16,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:07:16,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:07:16,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:07:16,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:07:16,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:07:16,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:07:16,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:07:16,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:07:16,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:07:16,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:07:16,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:07:16,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:07:16,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:07:16,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:07:16,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:07:16,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:07:16,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:07:16,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:07:16,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:07:16,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:07:16,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:07:16,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:07:16,821 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:07:16,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-29 04:07:16,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561079590/cb248d8a0b454a9abe6eaed432f5dd94/FLAGf4e81843d [2020-10-29 04:07:17,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:07:17,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/mbpr4.c [2020-10-29 04:07:17,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561079590/cb248d8a0b454a9abe6eaed432f5dd94/FLAGf4e81843d [2020-10-29 04:07:17,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/561079590/cb248d8a0b454a9abe6eaed432f5dd94 [2020-10-29 04:07:17,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:07:17,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:07:17,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:07:17,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:07:17,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:07:17,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:07:17" (1/1) ... [2020-10-29 04:07:17,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f78def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:17, skipping insertion in model container [2020-10-29 04:07:17,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:07:17" (1/1) ... [2020-10-29 04:07:17,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:07:17,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:07:18,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:07:18,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:07:18,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:07:18,197 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:07:18,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18 WrapperNode [2020-10-29 04:07:18,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:07:18,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:07:18,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:07:18,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:07:18,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (1/1) ... [2020-10-29 04:07:18,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:07:18,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:07:18,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:07:18,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:07:18,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (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 [2020-10-29 04:07:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:07:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:07:18,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:07:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 04:07:18,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 04:07:18,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:07:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:07:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:07:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:07:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:07:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 04:07:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 04:07:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:07:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:07:18,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:07:18,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:07:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:07:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:07:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:07:18,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:07:18,980 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:07:18,980 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-29 04:07:18,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:07:18 BoogieIcfgContainer [2020-10-29 04:07:18,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:07:18,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:07:18,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:07:18,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:07:18,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:07:17" (1/3) ... [2020-10-29 04:07:18,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d3bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:07:18, skipping insertion in model container [2020-10-29 04:07:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:07:18" (2/3) ... [2020-10-29 04:07:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8d3bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:07:18, skipping insertion in model container [2020-10-29 04:07:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:07:18" (3/3) ... [2020-10-29 04:07:18,992 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2020-10-29 04:07:19,004 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:07:19,009 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:07:19,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:07:19,051 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:07:19,051 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:07:19,051 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:07:19,051 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:07:19,052 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:07:19,052 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:07:19,052 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:07:19,052 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:07:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-29 04:07:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:07:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:19,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:19,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1384398134, now seen corresponding path program 1 times [2020-10-29 04:07:19,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:19,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324207512] [2020-10-29 04:07:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:19,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:07:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:07:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-29 04:07:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:07:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:07:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:20,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:07:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:20,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:20,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:07:20,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:20,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:20,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:20,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:07:20,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:20,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:20,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:20,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:20,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324207512] [2020-10-29 04:07:20,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:07:20,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:07:20,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726870684] [2020-10-29 04:07:20,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:07:20,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:20,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:07:20,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:07:20,306 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 6 states. [2020-10-29 04:07:20,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:20,697 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-10-29 04:07:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:07:20,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 04:07:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:20,708 INFO L225 Difference]: With dead ends: 102 [2020-10-29 04:07:20,708 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 04:07:20,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:20,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 04:07:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 04:07:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 04:07:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-10-29 04:07:20,760 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 29 [2020-10-29 04:07:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-10-29 04:07:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:07:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-10-29 04:07:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 04:07:20,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:20,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:20,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:07:20,764 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2007513386, now seen corresponding path program 1 times [2020-10-29 04:07:20,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:20,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917317174] [2020-10-29 04:07:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:25,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 04:07:25,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 04:07:25,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:07:25,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:25,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:25,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:07:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:07:25,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:07:25,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:25,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:25,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:07:25,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:25,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:25,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:25,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:25,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:25,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:25,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:25,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:07:25,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:25,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:25,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:07:25,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917317174] [2020-10-29 04:07:25,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:07:25,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:07:25,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448903424] [2020-10-29 04:07:25,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:07:25,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:25,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:07:25,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:07:25,953 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 6 states. [2020-10-29 04:07:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:26,236 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2020-10-29 04:07:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:07:26,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-29 04:07:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:26,242 INFO L225 Difference]: With dead ends: 94 [2020-10-29 04:07:26,242 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 04:07:26,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 04:07:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-29 04:07:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 04:07:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-29 04:07:26,261 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 29 [2020-10-29 04:07:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:26,261 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-29 04:07:26,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:07:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-29 04:07:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:07:26,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:26,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:26,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:07:26,264 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:26,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1881392450, now seen corresponding path program 1 times [2020-10-29 04:07:26,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:26,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808340914] [2020-10-29 04:07:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:26,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:26,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:27,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:29,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:30,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:30,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:30,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 04:07:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 04:07:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:07:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:07:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:31,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:07:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:07:31,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:31,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:31,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:31,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:31,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:31,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:31,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:31,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:31,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:31,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:31,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:31,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:07:31,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808340914] [2020-10-29 04:07:31,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:31,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:07:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955164559] [2020-10-29 04:07:31,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:07:31,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:07:31,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:07:31,588 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 10 states. [2020-10-29 04:07:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:32,230 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2020-10-29 04:07:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:07:32,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-29 04:07:32,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:32,233 INFO L225 Difference]: With dead ends: 126 [2020-10-29 04:07:32,233 INFO L226 Difference]: Without dead ends: 123 [2020-10-29 04:07:32,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:07:32,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-29 04:07:32,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 80. [2020-10-29 04:07:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 04:07:32,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-10-29 04:07:32,253 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 45 [2020-10-29 04:07:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:32,254 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-10-29 04:07:32,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:07:32,254 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-10-29 04:07:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 04:07:32,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:32,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:32,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:07:32,258 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:32,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:32,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1904024704, now seen corresponding path program 1 times [2020-10-29 04:07:32,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:32,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452165008] [2020-10-29 04:07:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:35,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:37,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:37,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 04:07:37,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:37,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:07:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:37,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:37,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:37,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:37,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:37,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:37,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:37,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:37,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:07:37,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452165008] [2020-10-29 04:07:37,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:37,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:07:37,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432155059] [2020-10-29 04:07:37,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:07:37,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:37,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:07:37,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:37,546 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 8 states. [2020-10-29 04:07:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:38,077 INFO L93 Difference]: Finished difference Result 172 states and 215 transitions. [2020-10-29 04:07:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:07:38,078 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-29 04:07:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:38,080 INFO L225 Difference]: With dead ends: 172 [2020-10-29 04:07:38,081 INFO L226 Difference]: Without dead ends: 155 [2020-10-29 04:07:38,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-29 04:07:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 106. [2020-10-29 04:07:38,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 04:07:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 133 transitions. [2020-10-29 04:07:38,100 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 133 transitions. Word has length 45 [2020-10-29 04:07:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:38,101 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 133 transitions. [2020-10-29 04:07:38,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:07:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 133 transitions. [2020-10-29 04:07:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 04:07:38,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:38,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:38,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:07:38,103 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:38,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1476597497, now seen corresponding path program 1 times [2020-10-29 04:07:38,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:38,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480960481] [2020-10-29 04:07:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 04:07:43,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:07:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 04:07:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:07:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:07:43,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:07:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:43,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:43,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:43,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:43,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:43,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:43,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:43,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:43,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:07:43,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480960481] [2020-10-29 04:07:43,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:43,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:07:43,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416547467] [2020-10-29 04:07:43,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:07:43,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:43,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:07:43,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:07:43,331 INFO L87 Difference]: Start difference. First operand 106 states and 133 transitions. Second operand 8 states. [2020-10-29 04:07:44,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:44,067 INFO L93 Difference]: Finished difference Result 279 states and 360 transitions. [2020-10-29 04:07:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:07:44,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-29 04:07:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:44,071 INFO L225 Difference]: With dead ends: 279 [2020-10-29 04:07:44,071 INFO L226 Difference]: Without dead ends: 219 [2020-10-29 04:07:44,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:07:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-29 04:07:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 174. [2020-10-29 04:07:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-29 04:07:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 220 transitions. [2020-10-29 04:07:44,115 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 220 transitions. Word has length 49 [2020-10-29 04:07:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:44,116 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 220 transitions. [2020-10-29 04:07:44,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:07:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 220 transitions. [2020-10-29 04:07:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:07:44,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:44,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:44,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:07:44,127 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:44,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:44,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1105832303, now seen corresponding path program 1 times [2020-10-29 04:07:44,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:44,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758153135] [2020-10-29 04:07:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:44,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:44,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:49,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:49,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:07:49,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 04:07:49,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:07:49,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:49,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:49,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:07:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:07:49,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:07:49,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:50,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:50,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:50,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:50,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:50,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:50,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:50,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:07:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:07:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:50,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:07:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:07:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:50,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:50,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:50,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:50,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:07:50,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:50,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:50,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:50,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:07:50,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758153135] [2020-10-29 04:07:50,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:50,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:07:50,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549115420] [2020-10-29 04:07:50,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:07:50,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:50,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:07:50,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:07:50,451 INFO L87 Difference]: Start difference. First operand 174 states and 220 transitions. Second operand 14 states. [2020-10-29 04:07:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:52,663 INFO L93 Difference]: Finished difference Result 399 states and 513 transitions. [2020-10-29 04:07:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:07:52,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 04:07:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:52,667 INFO L225 Difference]: With dead ends: 399 [2020-10-29 04:07:52,667 INFO L226 Difference]: Without dead ends: 382 [2020-10-29 04:07:52,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:07:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-29 04:07:52,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 213. [2020-10-29 04:07:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-29 04:07:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 271 transitions. [2020-10-29 04:07:52,721 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 271 transitions. Word has length 54 [2020-10-29 04:07:52,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:52,721 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 271 transitions. [2020-10-29 04:07:52,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:07:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 271 transitions. [2020-10-29 04:07:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:07:52,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:52,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:52,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:07:52,727 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:52,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1178218861, now seen corresponding path program 1 times [2020-10-29 04:07:52,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:52,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473692499] [2020-10-29 04:07:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:52,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:57,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:07:57,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 04:07:57,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:07:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:07:58,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:58,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:07:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:07:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:07:58,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:07:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:58,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:07:58,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:07:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:07:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:07:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:07:58,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:07:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 04:07:58,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473692499] [2020-10-29 04:07:58,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:07:58,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:07:58,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037913578] [2020-10-29 04:07:58,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:07:58,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:07:58,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:07:58,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:07:58,133 INFO L87 Difference]: Start difference. First operand 213 states and 271 transitions. Second operand 13 states. [2020-10-29 04:07:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:07:59,252 INFO L93 Difference]: Finished difference Result 312 states and 397 transitions. [2020-10-29 04:07:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:07:59,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-29 04:07:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:07:59,256 INFO L225 Difference]: With dead ends: 312 [2020-10-29 04:07:59,256 INFO L226 Difference]: Without dead ends: 295 [2020-10-29 04:07:59,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:07:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-29 04:07:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 243. [2020-10-29 04:07:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-29 04:07:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 310 transitions. [2020-10-29 04:07:59,292 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 310 transitions. Word has length 54 [2020-10-29 04:07:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:07:59,292 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 310 transitions. [2020-10-29 04:07:59,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:07:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 310 transitions. [2020-10-29 04:07:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 04:07:59,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:07:59,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:07:59,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:07:59,294 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:07:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:07:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1836884757, now seen corresponding path program 1 times [2020-10-29 04:07:59,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:07:59,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860262846] [2020-10-29 04:07:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:07:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:07:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:07:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 04:08:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 04:08:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:08:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 04:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 04:08:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:04,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:08:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:08:04,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860262846] [2020-10-29 04:08:04,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:04,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:08:04,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137385620] [2020-10-29 04:08:04,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:08:04,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:04,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:08:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:08:04,532 INFO L87 Difference]: Start difference. First operand 243 states and 310 transitions. Second operand 11 states. [2020-10-29 04:08:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:05,532 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-10-29 04:08:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:08:05,533 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-29 04:08:05,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:05,539 INFO L225 Difference]: With dead ends: 408 [2020-10-29 04:08:05,539 INFO L226 Difference]: Without dead ends: 405 [2020-10-29 04:08:05,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:08:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-29 04:08:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 314. [2020-10-29 04:08:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-10-29 04:08:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 401 transitions. [2020-10-29 04:08:05,589 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 401 transitions. Word has length 54 [2020-10-29 04:08:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:05,589 INFO L481 AbstractCegarLoop]: Abstraction has 314 states and 401 transitions. [2020-10-29 04:08:05,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:08:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 401 transitions. [2020-10-29 04:08:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:08:05,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:05,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:05,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:08:05,592 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:05,592 INFO L82 PathProgramCache]: Analyzing trace with hash 143841310, now seen corresponding path program 2 times [2020-10-29 04:08:05,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:05,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868871992] [2020-10-29 04:08:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:10,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:10,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:08:10,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 04:08:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 04:08:10,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:10,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:08:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:08:10,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 04:08:10,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:11,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:11,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:11,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:11,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:11,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:11,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:08:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:11,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:11,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:11,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:11,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:08:11,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:11,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:11,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:08:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:11,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:11,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:11,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:08:11,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868871992] [2020-10-29 04:08:11,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:11,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:08:11,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079866570] [2020-10-29 04:08:11,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:08:11,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:11,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:08:11,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:08:11,366 INFO L87 Difference]: Start difference. First operand 314 states and 401 transitions. Second operand 14 states. [2020-10-29 04:08:12,267 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-29 04:08:13,510 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-29 04:08:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:14,297 INFO L93 Difference]: Finished difference Result 795 states and 1019 transitions. [2020-10-29 04:08:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 04:08:14,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-29 04:08:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:14,308 INFO L225 Difference]: With dead ends: 795 [2020-10-29 04:08:14,308 INFO L226 Difference]: Without dead ends: 778 [2020-10-29 04:08:14,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 04:08:14,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-29 04:08:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 560. [2020-10-29 04:08:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-29 04:08:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 720 transitions. [2020-10-29 04:08:14,386 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 720 transitions. Word has length 63 [2020-10-29 04:08:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:14,386 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 720 transitions. [2020-10-29 04:08:14,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:08:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 720 transitions. [2020-10-29 04:08:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 04:08:14,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:14,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:14,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:08:14,389 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1026564445, now seen corresponding path program 3 times [2020-10-29 04:08:14,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:14,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118919447] [2020-10-29 04:08:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:14,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:19,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 04:08:19,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:08:19,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:08:19,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:19,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:19,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:19,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:19,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:19,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:19,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:19,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:19,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:08:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:19,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:08:19,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118919447] [2020-10-29 04:08:19,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:19,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:08:19,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833550398] [2020-10-29 04:08:19,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:08:19,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:19,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:08:19,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:08:19,616 INFO L87 Difference]: Start difference. First operand 560 states and 720 transitions. Second operand 9 states. [2020-10-29 04:08:20,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:20,318 INFO L93 Difference]: Finished difference Result 969 states and 1237 transitions. [2020-10-29 04:08:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:08:20,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-29 04:08:20,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:20,323 INFO L225 Difference]: With dead ends: 969 [2020-10-29 04:08:20,323 INFO L226 Difference]: Without dead ends: 933 [2020-10-29 04:08:20,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:08:20,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-29 04:08:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 696. [2020-10-29 04:08:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-29 04:08:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 899 transitions. [2020-10-29 04:08:20,417 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 899 transitions. Word has length 62 [2020-10-29 04:08:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:20,418 INFO L481 AbstractCegarLoop]: Abstraction has 696 states and 899 transitions. [2020-10-29 04:08:20,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:08:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 899 transitions. [2020-10-29 04:08:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:08:20,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:20,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:20,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:08:20,421 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:20,422 INFO L82 PathProgramCache]: Analyzing trace with hash -250525476, now seen corresponding path program 1 times [2020-10-29 04:08:20,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:20,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558508202] [2020-10-29 04:08:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:20,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:21,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:25,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:08:25,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-29 04:08:25,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 04:08:25,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:25,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:08:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:08:25,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:08:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:08:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:25,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:25,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:25,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:25,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:25,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:25,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:25,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:25,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:25,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:25,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:25,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:08:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:25,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:08:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:25,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:25,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:08:25,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558508202] [2020-10-29 04:08:25,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:25,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:08:25,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041459125] [2020-10-29 04:08:25,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:08:25,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:25,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:08:25,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:08:25,817 INFO L87 Difference]: Start difference. First operand 696 states and 899 transitions. Second operand 14 states. [2020-10-29 04:08:27,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:27,090 INFO L93 Difference]: Finished difference Result 1029 states and 1336 transitions. [2020-10-29 04:08:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:08:27,092 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-29 04:08:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:27,100 INFO L225 Difference]: With dead ends: 1029 [2020-10-29 04:08:27,101 INFO L226 Difference]: Without dead ends: 998 [2020-10-29 04:08:27,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:08:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-10-29 04:08:27,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 822. [2020-10-29 04:08:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-29 04:08:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1063 transitions. [2020-10-29 04:08:27,208 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1063 transitions. Word has length 63 [2020-10-29 04:08:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:27,208 INFO L481 AbstractCegarLoop]: Abstraction has 822 states and 1063 transitions. [2020-10-29 04:08:27,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:08:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1063 transitions. [2020-10-29 04:08:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 04:08:27,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:27,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:27,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:08:27,211 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:27,212 INFO L82 PathProgramCache]: Analyzing trace with hash -384538982, now seen corresponding path program 2 times [2020-10-29 04:08:27,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:27,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265336132] [2020-10-29 04:08:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:29,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:32,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:32,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 04:08:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:32,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:32,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:32,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:08:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:32,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:32,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:32,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:32,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:08:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:32,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 04:08:32,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265336132] [2020-10-29 04:08:32,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:32,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:08:32,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060571903] [2020-10-29 04:08:32,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:08:32,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:32,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:08:32,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:08:32,666 INFO L87 Difference]: Start difference. First operand 822 states and 1063 transitions. Second operand 16 states. [2020-10-29 04:08:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:36,102 INFO L93 Difference]: Finished difference Result 1359 states and 1754 transitions. [2020-10-29 04:08:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 04:08:36,103 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-29 04:08:36,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:36,111 INFO L225 Difference]: With dead ends: 1359 [2020-10-29 04:08:36,112 INFO L226 Difference]: Without dead ends: 1356 [2020-10-29 04:08:36,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=526, Invalid=3134, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 04:08:36,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2020-10-29 04:08:36,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1017. [2020-10-29 04:08:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-29 04:08:36,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1319 transitions. [2020-10-29 04:08:36,239 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1319 transitions. Word has length 63 [2020-10-29 04:08:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:36,240 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1319 transitions. [2020-10-29 04:08:36,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:08:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1319 transitions. [2020-10-29 04:08:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 04:08:36,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:36,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:36,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:08:36,254 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1341836184, now seen corresponding path program 2 times [2020-10-29 04:08:36,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:36,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301222784] [2020-10-29 04:08:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:08:36,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 04:08:36,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:08:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:08:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:08:36,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301222784] [2020-10-29 04:08:36,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:08:36,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:08:36,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64903900] [2020-10-29 04:08:36,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:08:36,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:36,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:08:36,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:08:36,459 INFO L87 Difference]: Start difference. First operand 1017 states and 1319 transitions. Second operand 4 states. [2020-10-29 04:08:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:36,645 INFO L93 Difference]: Finished difference Result 1143 states and 1474 transitions. [2020-10-29 04:08:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:08:36,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-29 04:08:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:36,649 INFO L225 Difference]: With dead ends: 1143 [2020-10-29 04:08:36,649 INFO L226 Difference]: Without dead ends: 457 [2020-10-29 04:08:36,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:08:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-29 04:08:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2020-10-29 04:08:36,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-29 04:08:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 575 transitions. [2020-10-29 04:08:36,713 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 575 transitions. Word has length 61 [2020-10-29 04:08:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:36,714 INFO L481 AbstractCegarLoop]: Abstraction has 457 states and 575 transitions. [2020-10-29 04:08:36,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:08:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 575 transitions. [2020-10-29 04:08:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:08:36,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:36,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:36,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:08:36,716 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:36,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1407709182, now seen corresponding path program 1 times [2020-10-29 04:08:36,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:36,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829835441] [2020-10-29 04:08:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:08:41,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:08:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 04:08:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:42,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:42,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:42,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:08:42,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:08:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:42,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:42,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:42,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:42,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:42,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:42,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:42,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:08:42,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829835441] [2020-10-29 04:08:42,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:42,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:08:42,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625703772] [2020-10-29 04:08:42,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:08:42,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:42,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:08:42,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:08:42,364 INFO L87 Difference]: Start difference. First operand 457 states and 575 transitions. Second operand 15 states. [2020-10-29 04:08:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:45,909 INFO L93 Difference]: Finished difference Result 703 states and 884 transitions. [2020-10-29 04:08:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 04:08:45,910 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-29 04:08:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:45,915 INFO L225 Difference]: With dead ends: 703 [2020-10-29 04:08:45,916 INFO L226 Difference]: Without dead ends: 700 [2020-10-29 04:08:45,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=551, Invalid=3109, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 04:08:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-29 04:08:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 466. [2020-10-29 04:08:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:08:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 586 transitions. [2020-10-29 04:08:45,983 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 586 transitions. Word has length 66 [2020-10-29 04:08:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:45,984 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 586 transitions. [2020-10-29 04:08:45,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:08:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 586 transitions. [2020-10-29 04:08:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:08:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:45,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:08:45,986 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -937869566, now seen corresponding path program 2 times [2020-10-29 04:08:45,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072767240] [2020-10-29 04:08:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:46,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:50,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 04:08:50,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:08:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:08:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:51,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:51,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:51,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:51,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:51,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:51,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:51,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:51,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:51,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:51,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:51,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:51,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:51,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:08:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 04:08:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:51,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:51,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:08:51,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072767240] [2020-10-29 04:08:51,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:51,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:08:51,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296858996] [2020-10-29 04:08:51,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:08:51,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:08:51,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:08:51,763 INFO L87 Difference]: Start difference. First operand 466 states and 586 transitions. Second operand 14 states. [2020-10-29 04:08:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:08:54,170 INFO L93 Difference]: Finished difference Result 635 states and 794 transitions. [2020-10-29 04:08:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 04:08:54,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-29 04:08:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:08:54,175 INFO L225 Difference]: With dead ends: 635 [2020-10-29 04:08:54,175 INFO L226 Difference]: Without dead ends: 597 [2020-10-29 04:08:54,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=329, Invalid=1231, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 04:08:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-29 04:08:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 401. [2020-10-29 04:08:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-29 04:08:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 500 transitions. [2020-10-29 04:08:54,234 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 500 transitions. Word has length 66 [2020-10-29 04:08:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:08:54,235 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 500 transitions. [2020-10-29 04:08:54,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:08:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 500 transitions. [2020-10-29 04:08:54,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 04:08:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:08:54,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:08:54,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:08:54,237 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:08:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:08:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 216183599, now seen corresponding path program 1 times [2020-10-29 04:08:54,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:08:54,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920227349] [2020-10-29 04:08:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:08:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:55,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:56,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:08:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:08:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:59,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:08:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:08:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:08:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:08:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:08:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:08:59,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:08:59,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:08:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:08:59,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:08:59,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:08:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:08:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:08:59,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920227349] [2020-10-29 04:08:59,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:08:59,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:08:59,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964083170] [2020-10-29 04:08:59,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:08:59,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:08:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:08:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:08:59,801 INFO L87 Difference]: Start difference. First operand 401 states and 500 transitions. Second operand 17 states. [2020-10-29 04:09:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:04,476 INFO L93 Difference]: Finished difference Result 928 states and 1169 transitions. [2020-10-29 04:09:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-29 04:09:04,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 72 [2020-10-29 04:09:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:04,482 INFO L225 Difference]: With dead ends: 928 [2020-10-29 04:09:04,482 INFO L226 Difference]: Without dead ends: 925 [2020-10-29 04:09:04,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1976 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=740, Invalid=5580, Unknown=0, NotChecked=0, Total=6320 [2020-10-29 04:09:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2020-10-29 04:09:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 584. [2020-10-29 04:09:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-29 04:09:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 735 transitions. [2020-10-29 04:09:04,581 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 735 transitions. Word has length 72 [2020-10-29 04:09:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:04,581 INFO L481 AbstractCegarLoop]: Abstraction has 584 states and 735 transitions. [2020-10-29 04:09:04,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:09:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 735 transitions. [2020-10-29 04:09:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 04:09:04,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:04,584 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:04,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:09:04,584 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:04,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2061550765, now seen corresponding path program 1 times [2020-10-29 04:09:04,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:04,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713530193] [2020-10-29 04:09:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:04,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 04:09:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:09:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 04:09:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:09,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:09,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:09:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:09:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:09,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:09:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:09,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:09,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:09:09,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713530193] [2020-10-29 04:09:09,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:09,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 04:09:09,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441517063] [2020-10-29 04:09:09,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 04:09:09,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 04:09:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:09:09,824 INFO L87 Difference]: Start difference. First operand 584 states and 735 transitions. Second operand 11 states. [2020-10-29 04:09:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:10,848 INFO L93 Difference]: Finished difference Result 1038 states and 1319 transitions. [2020-10-29 04:09:10,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 04:09:10,849 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-29 04:09:10,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:10,855 INFO L225 Difference]: With dead ends: 1038 [2020-10-29 04:09:10,855 INFO L226 Difference]: Without dead ends: 1007 [2020-10-29 04:09:10,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-29 04:09:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-29 04:09:10,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 738. [2020-10-29 04:09:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-29 04:09:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 940 transitions. [2020-10-29 04:09:10,978 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 940 transitions. Word has length 72 [2020-10-29 04:09:10,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:10,978 INFO L481 AbstractCegarLoop]: Abstraction has 738 states and 940 transitions. [2020-10-29 04:09:10,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 04:09:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 940 transitions. [2020-10-29 04:09:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 04:09:10,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:10,982 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:10,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:09:10,982 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:10,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1185790041, now seen corresponding path program 3 times [2020-10-29 04:09:10,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:10,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699900040] [2020-10-29 04:09:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:11,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:09:11,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:09:11,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:11,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:11,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:11,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:11,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:11,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:11,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:09:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:11,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:11,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-29 04:09:11,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699900040] [2020-10-29 04:09:11,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:09:11,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:09:11,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822289206] [2020-10-29 04:09:11,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:09:11,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:11,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:09:11,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:11,191 INFO L87 Difference]: Start difference. First operand 738 states and 940 transitions. Second operand 4 states. [2020-10-29 04:09:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:11,384 INFO L93 Difference]: Finished difference Result 963 states and 1221 transitions. [2020-10-29 04:09:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:09:11,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-29 04:09:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:11,388 INFO L225 Difference]: With dead ends: 963 [2020-10-29 04:09:11,388 INFO L226 Difference]: Without dead ends: 377 [2020-10-29 04:09:11,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-29 04:09:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2020-10-29 04:09:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-29 04:09:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 463 transitions. [2020-10-29 04:09:11,467 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 463 transitions. Word has length 70 [2020-10-29 04:09:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:11,467 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 463 transitions. [2020-10-29 04:09:11,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:09:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 463 transitions. [2020-10-29 04:09:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 04:09:11,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:11,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:11,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 04:09:11,470 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:11,471 INFO L82 PathProgramCache]: Analyzing trace with hash -943815916, now seen corresponding path program 1 times [2020-10-29 04:09:11,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:11,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634707961] [2020-10-29 04:09:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:16,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:09:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:09:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:09:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,059 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-29 04:09:17,257 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-10-29 04:09:17,452 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-10-29 04:09:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:17,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:17,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:17,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:17,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:17,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:17,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:17,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:17,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 04:09:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:17,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:17,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:09:17,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:17,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:17,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:17,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:17,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-29 04:09:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:17,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:17,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:17,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:17,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:17,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 04:09:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:17,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:17,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:17,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 04:09:17,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634707961] [2020-10-29 04:09:17,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:17,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:09:17,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676012872] [2020-10-29 04:09:17,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:09:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:09:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:09:17,710 INFO L87 Difference]: Start difference. First operand 377 states and 463 transitions. Second operand 15 states. [2020-10-29 04:09:18,735 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 04:09:18,930 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-29 04:09:19,258 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-10-29 04:09:19,502 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-10-29 04:09:19,853 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 04:09:19,999 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-29 04:09:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:20,569 INFO L93 Difference]: Finished difference Result 473 states and 575 transitions. [2020-10-29 04:09:20,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 04:09:20,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-10-29 04:09:20,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:20,573 INFO L225 Difference]: With dead ends: 473 [2020-10-29 04:09:20,573 INFO L226 Difference]: Without dead ends: 456 [2020-10-29 04:09:20,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=241, Invalid=1165, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 04:09:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-29 04:09:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 348. [2020-10-29 04:09:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-29 04:09:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 426 transitions. [2020-10-29 04:09:20,640 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 426 transitions. Word has length 76 [2020-10-29 04:09:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:20,641 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 426 transitions. [2020-10-29 04:09:20,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:09:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 426 transitions. [2020-10-29 04:09:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 04:09:20,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:20,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:20,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 04:09:20,643 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -918434496, now seen corresponding path program 2 times [2020-10-29 04:09:20,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:20,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565592938] [2020-10-29 04:09:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:20,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:20,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:09:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:09:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 04:09:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:25,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:25,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:25,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:25,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:25,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:09:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 04:09:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 04:09:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-29 04:09:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 04:09:25,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565592938] [2020-10-29 04:09:25,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:25,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:09:25,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390862959] [2020-10-29 04:09:25,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:09:25,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:09:25,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:09:25,924 INFO L87 Difference]: Start difference. First operand 348 states and 426 transitions. Second operand 12 states. [2020-10-29 04:09:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:27,636 INFO L93 Difference]: Finished difference Result 527 states and 645 transitions. [2020-10-29 04:09:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:09:27,637 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-29 04:09:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:27,638 INFO L225 Difference]: With dead ends: 527 [2020-10-29 04:09:27,638 INFO L226 Difference]: Without dead ends: 237 [2020-10-29 04:09:27,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:09:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-29 04:09:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 201. [2020-10-29 04:09:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-29 04:09:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 245 transitions. [2020-10-29 04:09:27,676 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 245 transitions. Word has length 81 [2020-10-29 04:09:27,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:27,676 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 245 transitions. [2020-10-29 04:09:27,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:09:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 245 transitions. [2020-10-29 04:09:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 04:09:27,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:27,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:27,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 04:09:27,678 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:27,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:27,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1103989878, now seen corresponding path program 3 times [2020-10-29 04:09:27,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:27,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955153452] [2020-10-29 04:09:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:32,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:09:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 04:09:32,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:33,110 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 31 [2020-10-29 04:09:33,256 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-10-29 04:09:33,537 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 36 [2020-10-29 04:09:33,940 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 37 [2020-10-29 04:09:34,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:34,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:34,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:34,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:34,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:09:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:09:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:34,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:34,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 04:09:34,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955153452] [2020-10-29 04:09:34,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:34,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:09:34,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340057902] [2020-10-29 04:09:34,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:09:34,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:34,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:09:34,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:09:34,960 INFO L87 Difference]: Start difference. First operand 201 states and 245 transitions. Second operand 18 states. [2020-10-29 04:09:35,169 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-29 04:09:36,972 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-29 04:09:37,231 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-29 04:09:37,661 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-29 04:09:37,961 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-29 04:09:38,143 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-29 04:09:38,332 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-29 04:09:38,625 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-29 04:09:38,866 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-29 04:09:39,191 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-10-29 04:09:39,380 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-29 04:09:39,703 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-29 04:09:39,951 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-29 04:09:40,153 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-29 04:09:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:41,414 INFO L93 Difference]: Finished difference Result 464 states and 581 transitions. [2020-10-29 04:09:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 04:09:41,415 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-29 04:09:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:41,417 INFO L225 Difference]: With dead ends: 464 [2020-10-29 04:09:41,418 INFO L226 Difference]: Without dead ends: 376 [2020-10-29 04:09:41,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=364, Invalid=2086, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 04:09:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-29 04:09:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 249. [2020-10-29 04:09:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-29 04:09:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2020-10-29 04:09:41,469 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 79 [2020-10-29 04:09:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:41,469 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2020-10-29 04:09:41,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:09:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2020-10-29 04:09:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 04:09:41,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:41,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:41,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 04:09:41,472 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1141589576, now seen corresponding path program 1 times [2020-10-29 04:09:41,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:41,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572953835] [2020-10-29 04:09:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:41,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 04:09:41,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 04:09:41,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:41,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:09:41,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 04:09:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:41,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:41,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:41,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:09:41,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:41,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:41,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:41,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:09:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:41,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:41,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:09:41,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:41,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:41,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:09:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:41,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:41,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:41,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:09:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:41,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:41,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:41,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 04:09:41,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572953835] [2020-10-29 04:09:41,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:09:41,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:09:41,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158317951] [2020-10-29 04:09:41,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:09:41,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:41,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:09:41,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:41,776 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand 4 states. [2020-10-29 04:09:41,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:41,939 INFO L93 Difference]: Finished difference Result 373 states and 456 transitions. [2020-10-29 04:09:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:09:41,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-29 04:09:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:41,945 INFO L225 Difference]: With dead ends: 373 [2020-10-29 04:09:41,945 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 04:09:41,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:41,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 04:09:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-10-29 04:09:41,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-29 04:09:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-10-29 04:09:41,978 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 79 [2020-10-29 04:09:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:41,978 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-10-29 04:09:41,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:09:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-10-29 04:09:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 04:09:41,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:41,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:41,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 04:09:41,980 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1275392067, now seen corresponding path program 4 times [2020-10-29 04:09:41,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:41,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616728073] [2020-10-29 04:09:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 04:09:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:09:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:47,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:47,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:09:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:09:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:47,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-29 04:09:47,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616728073] [2020-10-29 04:09:47,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:47,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:09:47,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345593389] [2020-10-29 04:09:47,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:09:47,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:09:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:09:47,307 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 10 states. [2020-10-29 04:09:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:48,270 INFO L93 Difference]: Finished difference Result 430 states and 517 transitions. [2020-10-29 04:09:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:09:48,272 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-29 04:09:48,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:48,275 INFO L225 Difference]: With dead ends: 430 [2020-10-29 04:09:48,275 INFO L226 Difference]: Without dead ends: 296 [2020-10-29 04:09:48,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:09:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-29 04:09:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 246. [2020-10-29 04:09:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-29 04:09:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 288 transitions. [2020-10-29 04:09:48,314 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 288 transitions. Word has length 83 [2020-10-29 04:09:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:48,314 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 288 transitions. [2020-10-29 04:09:48,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:09:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 288 transitions. [2020-10-29 04:09:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 04:09:48,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:48,316 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:48,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 04:09:48,316 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2042844355, now seen corresponding path program 2 times [2020-10-29 04:09:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:48,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782531015] [2020-10-29 04:09:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:09:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:09:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:48,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:09:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:48,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:48,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:09:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:48,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:48,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:48,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:48,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:48,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:09:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:48,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:48,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:48,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:48,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:48,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:48,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:48,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:48,581 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-10-29 04:09:48,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782531015] [2020-10-29 04:09:48,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:09:48,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:09:48,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125569951] [2020-10-29 04:09:48,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:09:48,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:48,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:09:48,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:48,583 INFO L87 Difference]: Start difference. First operand 246 states and 288 transitions. Second operand 4 states. [2020-10-29 04:09:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:48,743 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2020-10-29 04:09:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 04:09:48,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-29 04:09:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:48,745 INFO L225 Difference]: With dead ends: 277 [2020-10-29 04:09:48,745 INFO L226 Difference]: Without dead ends: 177 [2020-10-29 04:09:48,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:09:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-29 04:09:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-10-29 04:09:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-29 04:09:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-10-29 04:09:48,772 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 88 [2020-10-29 04:09:48,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:48,773 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-10-29 04:09:48,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:09:48,773 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-10-29 04:09:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 04:09:48,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:48,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:48,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 04:09:48,774 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:48,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1232013846, now seen corresponding path program 5 times [2020-10-29 04:09:48,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:48,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425531213] [2020-10-29 04:09:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:48,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 04:09:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:09:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:09:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:09:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:09:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:09:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:09:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:09:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:09:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:09:54,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:09:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:09:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:54,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:09:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:09:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:09:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:09:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 04:09:54,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425531213] [2020-10-29 04:09:54,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:09:54,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 04:09:54,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738520258] [2020-10-29 04:09:54,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 04:09:54,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:09:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 04:09:54,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:09:54,086 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 12 states. [2020-10-29 04:09:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:09:54,856 INFO L93 Difference]: Finished difference Result 215 states and 239 transitions. [2020-10-29 04:09:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 04:09:54,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-29 04:09:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:09:54,860 INFO L225 Difference]: With dead ends: 215 [2020-10-29 04:09:54,861 INFO L226 Difference]: Without dead ends: 184 [2020-10-29 04:09:54,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:09:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-29 04:09:54,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2020-10-29 04:09:54,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-29 04:09:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 196 transitions. [2020-10-29 04:09:54,882 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 196 transitions. Word has length 97 [2020-10-29 04:09:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:09:54,883 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 196 transitions. [2020-10-29 04:09:54,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 04:09:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 196 transitions. [2020-10-29 04:09:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 04:09:54,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:09:54,884 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:09:54,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:09:54,885 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:09:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:09:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1783089772, now seen corresponding path program 6 times [2020-10-29 04:09:54,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:09:54,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497233901] [2020-10-29 04:09:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:09:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:09:54,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:55,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:56,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:58,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:09:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:09:59,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:09:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:09:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 04:09:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:00,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:00,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:00,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:10:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:00,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:10:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:10:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:00,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:10:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:00,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:00,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:00,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-29 04:10:00,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497233901] [2020-10-29 04:10:00,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:00,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:10:00,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461325347] [2020-10-29 04:10:00,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:10:00,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:10:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:10:00,387 INFO L87 Difference]: Start difference. First operand 177 states and 196 transitions. Second operand 13 states. [2020-10-29 04:10:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:02,223 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2020-10-29 04:10:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:10:02,224 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 97 [2020-10-29 04:10:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:02,227 INFO L225 Difference]: With dead ends: 272 [2020-10-29 04:10:02,227 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 04:10:02,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:10:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 04:10:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 185. [2020-10-29 04:10:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 04:10:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 204 transitions. [2020-10-29 04:10:02,260 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 204 transitions. Word has length 97 [2020-10-29 04:10:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:02,261 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 204 transitions. [2020-10-29 04:10:02,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:10:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 204 transitions. [2020-10-29 04:10:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 04:10:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:02,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:02,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:10:02,263 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -678777932, now seen corresponding path program 7 times [2020-10-29 04:10:02,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:02,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555018186] [2020-10-29 04:10:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:07,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:07,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 04:10:07,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:10:07,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 04:10:07,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:07,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 04:10:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 04:10:07,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:10:07,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:08,009 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-29 04:10:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:08,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:10:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:08,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:08,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:08,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:08,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:08,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:08,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:08,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:08,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:08,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:08,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:08,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:10:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:08,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:08,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:08,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 04:10:08,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555018186] [2020-10-29 04:10:08,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:08,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:10:08,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615386580] [2020-10-29 04:10:08,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:10:08,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:08,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:10:08,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:10:08,912 INFO L87 Difference]: Start difference. First operand 185 states and 204 transitions. Second operand 21 states. [2020-10-29 04:10:10,331 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-10-29 04:10:10,601 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-29 04:10:10,813 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-29 04:10:11,598 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-29 04:10:12,100 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-29 04:10:12,528 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-29 04:10:15,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:15,068 INFO L93 Difference]: Finished difference Result 342 states and 377 transitions. [2020-10-29 04:10:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 04:10:15,069 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-10-29 04:10:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:15,071 INFO L225 Difference]: With dead ends: 342 [2020-10-29 04:10:15,071 INFO L226 Difference]: Without dead ends: 311 [2020-10-29 04:10:15,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=974, Invalid=4576, Unknown=0, NotChecked=0, Total=5550 [2020-10-29 04:10:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-29 04:10:15,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 139. [2020-10-29 04:10:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-29 04:10:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2020-10-29 04:10:15,103 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 95 [2020-10-29 04:10:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:15,103 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2020-10-29 04:10:15,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:10:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2020-10-29 04:10:15,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 04:10:15,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:15,105 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:15,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:10:15,105 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:15,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:15,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2082900643, now seen corresponding path program 8 times [2020-10-29 04:10:15,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:15,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547933684] [2020-10-29 04:10:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:10:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:10:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:10:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:20,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:20,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:20,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:10:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:10:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:20,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:10:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:10:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:20,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:10:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:20,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:20,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:20,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:20,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 15 proven. 66 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-29 04:10:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547933684] [2020-10-29 04:10:20,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:20,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 04:10:20,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703387659] [2020-10-29 04:10:20,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 04:10:20,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 04:10:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:10:20,533 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 14 states. [2020-10-29 04:10:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:22,582 INFO L93 Difference]: Finished difference Result 210 states and 232 transitions. [2020-10-29 04:10:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 04:10:22,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 106 [2020-10-29 04:10:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:22,585 INFO L225 Difference]: With dead ends: 210 [2020-10-29 04:10:22,585 INFO L226 Difference]: Without dead ends: 193 [2020-10-29 04:10:22,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:10:22,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-29 04:10:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 144. [2020-10-29 04:10:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 04:10:22,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-10-29 04:10:22,611 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 106 [2020-10-29 04:10:22,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:22,611 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-10-29 04:10:22,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 04:10:22,611 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-10-29 04:10:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 04:10:22,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:22,613 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:22,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:10:22,613 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:22,613 INFO L82 PathProgramCache]: Analyzing trace with hash 883365964, now seen corresponding path program 9 times [2020-10-29 04:10:22,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:22,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415208176] [2020-10-29 04:10:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:23,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:27,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:10:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 04:10:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:28,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:10:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:10:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:10:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:10:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:10:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 04:10:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:28,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:28,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:28,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:28,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 93 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 04:10:28,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415208176] [2020-10-29 04:10:28,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:28,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:10:28,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280034334] [2020-10-29 04:10:28,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:10:28,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:28,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:10:28,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:10:28,075 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 15 states. [2020-10-29 04:10:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:30,476 INFO L93 Difference]: Finished difference Result 220 states and 244 transitions. [2020-10-29 04:10:30,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:10:30,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 115 [2020-10-29 04:10:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:30,479 INFO L225 Difference]: With dead ends: 220 [2020-10-29 04:10:30,479 INFO L226 Difference]: Without dead ends: 203 [2020-10-29 04:10:30,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 04:10:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-29 04:10:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 149. [2020-10-29 04:10:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 04:10:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2020-10-29 04:10:30,508 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 115 [2020-10-29 04:10:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:30,509 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2020-10-29 04:10:30,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:10:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2020-10-29 04:10:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-29 04:10:30,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:30,510 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:30,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:10:30,510 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:30,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1007626045, now seen corresponding path program 10 times [2020-10-29 04:10:30,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:30,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13431557] [2020-10-29 04:10:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:30,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:30,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:31,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:35,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 04:10:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:36,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:10:36,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:36,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:10:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:10:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:36,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:10:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:10:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:10:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 04:10:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:10:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-29 04:10:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:36,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:36,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:36,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:36,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:36,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:36,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:10:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-29 04:10:36,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13431557] [2020-10-29 04:10:36,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:36,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 04:10:36,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987702943] [2020-10-29 04:10:36,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 04:10:36,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:36,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 04:10:36,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-29 04:10:36,157 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 18 states. [2020-10-29 04:10:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:38,824 INFO L93 Difference]: Finished difference Result 194 states and 215 transitions. [2020-10-29 04:10:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:10:38,825 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-10-29 04:10:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:38,826 INFO L225 Difference]: With dead ends: 194 [2020-10-29 04:10:38,826 INFO L226 Difference]: Without dead ends: 191 [2020-10-29 04:10:38,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:10:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-29 04:10:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 159. [2020-10-29 04:10:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 04:10:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2020-10-29 04:10:38,859 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 124 [2020-10-29 04:10:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:38,862 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2020-10-29 04:10:38,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 04:10:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2020-10-29 04:10:38,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 04:10:38,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:38,863 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:38,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:10:38,864 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:38,864 INFO L82 PathProgramCache]: Analyzing trace with hash -104681940, now seen corresponding path program 11 times [2020-10-29 04:10:38,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:38,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996346952] [2020-10-29 04:10:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:39,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:39,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:43,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 04:10:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 04:10:43,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 04:10:43,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 04:10:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 04:10:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:10:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:10:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 04:10:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 04:10:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-29 04:10:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-29 04:10:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 180 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-10-29 04:10:44,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996346952] [2020-10-29 04:10:44,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:44,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:10:44,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177487116] [2020-10-29 04:10:44,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:10:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:10:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:10:44,365 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand 17 states. [2020-10-29 04:10:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:46,078 INFO L93 Difference]: Finished difference Result 247 states and 271 transitions. [2020-10-29 04:10:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:10:46,080 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 133 [2020-10-29 04:10:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:46,081 INFO L225 Difference]: With dead ends: 247 [2020-10-29 04:10:46,081 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 04:10:46,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:10:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 04:10:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2020-10-29 04:10:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 04:10:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2020-10-29 04:10:46,102 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 133 [2020-10-29 04:10:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:46,102 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2020-10-29 04:10:46,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:10:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2020-10-29 04:10:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 04:10:46,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:46,103 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:46,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:10:46,104 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -610868522, now seen corresponding path program 12 times [2020-10-29 04:10:46,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:46,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206658355] [2020-10-29 04:10:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:47,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 04:10:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:10:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:51,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:10:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-29 04:10:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 04:10:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-29 04:10:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 04:10:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:10:51,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 04:10:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-29 04:10:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-29 04:10:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:10:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:10:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:10:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-29 04:10:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:51,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:10:51,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:10:51,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:10:51,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:10:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 60 proven. 132 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-29 04:10:51,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206658355] [2020-10-29 04:10:51,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:10:51,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 04:10:51,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593426261] [2020-10-29 04:10:51,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:10:51,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:10:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:10:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:10:51,678 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand 17 states. [2020-10-29 04:10:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:10:53,512 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2020-10-29 04:10:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:10:53,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-29 04:10:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:10:53,515 INFO L225 Difference]: With dead ends: 175 [2020-10-29 04:10:53,515 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 04:10:53,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-10-29 04:10:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 04:10:53,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2020-10-29 04:10:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-29 04:10:53,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-29 04:10:53,549 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 149 [2020-10-29 04:10:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:10:53,550 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-29 04:10:53,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:10:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-29 04:10:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 04:10:53,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:10:53,551 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:10:53,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:10:53,552 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:10:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:10:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1890732200, now seen corresponding path program 13 times [2020-10-29 04:10:53,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:10:53,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317710011] [2020-10-29 04:10:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:10:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:10:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:55,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:10:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking...