/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/eca-rers2012/Problem14_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:31:00,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:31:00,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:31:00,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:31:00,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:31:00,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:31:00,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:31:00,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:31:00,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:31:00,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:31:00,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:31:00,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:31:00,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:31:00,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:31:00,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:31:00,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:31:00,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:31:00,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:31:00,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:31:00,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:31:00,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:31:00,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:31:00,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:31:00,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:31:00,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:31:00,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:31:00,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:31:00,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:31:00,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:31:00,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:31:00,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:31:00,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:31:00,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:31:00,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:31:00,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:31:00,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:31:00,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:31:00,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:31:00,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:31:00,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:31:00,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:31:00,265 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 07:31:00,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:31:00,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:31:00,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:31:00,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:31:00,323 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:31:00,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:31:00,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:31:00,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:31:00,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:31:00,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:31:00,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:31:00,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:31:00,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:31:00,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:31:00,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:31:00,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:31:00,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:31:00,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:31:00,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:31:00,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:31:00,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:31:00,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:31:00,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:31:00,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:31:00,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:31:00,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:31:00,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:31:00,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:31:00,841 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:31:00,842 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:31:00,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label22.c [2020-10-29 07:31:00,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a1dde8eb/b427ee5ec68a4720a9850e77600cab1c/FLAGa5f25c47d [2020-10-29 07:31:01,786 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:31:01,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label22.c [2020-10-29 07:31:01,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a1dde8eb/b427ee5ec68a4720a9850e77600cab1c/FLAGa5f25c47d [2020-10-29 07:31:02,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a1dde8eb/b427ee5ec68a4720a9850e77600cab1c [2020-10-29 07:31:02,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:31:02,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:31:02,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:31:02,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:31:02,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:31:02,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:02,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535a338a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02, skipping insertion in model container [2020-10-29 07:31:02,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:02,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:31:02,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:31:02,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:31:02,631 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:31:02,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:31:02,926 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:31:02,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02 WrapperNode [2020-10-29 07:31:02,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:31:02,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:31:02,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:31:02,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:31:02,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:02,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:02,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:02,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:03,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:03,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:03,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (1/1) ... [2020-10-29 07:31:03,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:31:03,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:31:03,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:31:03,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:31:03,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (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 07:31:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:31:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:31:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:31:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:31:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:31:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:31:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:31:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:31:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:31:04,957 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:31:04,957 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:31:04,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:31:04 BoogieIcfgContainer [2020-10-29 07:31:04,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:31:04,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:31:04,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:31:04,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:31:04,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:31:02" (1/3) ... [2020-10-29 07:31:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e95156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:31:04, skipping insertion in model container [2020-10-29 07:31:04,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:31:02" (2/3) ... [2020-10-29 07:31:04,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e95156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:31:04, skipping insertion in model container [2020-10-29 07:31:04,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:31:04" (3/3) ... [2020-10-29 07:31:04,970 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label22.c [2020-10-29 07:31:04,983 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:31:04,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:31:05,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:31:05,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:31:05,069 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:31:05,069 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:31:05,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:31:05,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:31:05,069 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:31:05,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:31:05,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:31:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:31:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 07:31:05,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:05,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:31:05,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2003639096, now seen corresponding path program 1 times [2020-10-29 07:31:05,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:05,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412189577] [2020-10-29 07:31:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:05,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:05,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 07:31:05,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:05,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-29 07:31:05,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:05,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:31:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:31:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 07:31:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:31:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:06,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:06,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:06,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:06,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:31:06,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:06,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:06,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:06,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:31:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:31:06,089 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 07:31:06,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412189577] [2020-10-29 07:31:06,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:31:06,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:31:06,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921745602] [2020-10-29 07:31:06,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:31:06,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:31:06,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:31:06,128 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-29 07:31:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:08,423 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-29 07:31:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:31:08,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-29 07:31:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:08,446 INFO L225 Difference]: With dead ends: 703 [2020-10-29 07:31:08,447 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 07:31:08,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:31:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 07:31:08,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-29 07:31:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-29 07:31:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-29 07:31:08,556 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 20 [2020-10-29 07:31:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:08,557 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-29 07:31:08,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:31:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-29 07:31:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 07:31:08,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:08,562 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, 1, 1, 1, 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 07:31:08,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:31:08,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:08,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1236730100, now seen corresponding path program 1 times [2020-10-29 07:31:08,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:08,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331136204] [2020-10-29 07:31:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:08,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:08,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:09,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:09,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:31:09,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:31:09,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-29 07:31:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:09,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:31:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:31:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:31:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:31:09,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:09,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:09,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:31:09,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:09,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:09,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:31:09,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:31:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:31:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:31:10,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331136204] [2020-10-29 07:31:10,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:31:10,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:31:10,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114916202] [2020-10-29 07:31:10,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:31:10,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:10,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:31:10,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:31:10,150 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-29 07:31:13,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:13,034 INFO L93 Difference]: Finished difference Result 1147 states and 1880 transitions. [2020-10-29 07:31:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:31:13,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-29 07:31:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:13,049 INFO L225 Difference]: With dead ends: 1147 [2020-10-29 07:31:13,049 INFO L226 Difference]: Without dead ends: 778 [2020-10-29 07:31:13,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:31:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-10-29 07:31:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 753. [2020-10-29 07:31:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-29 07:31:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1068 transitions. [2020-10-29 07:31:13,170 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1068 transitions. Word has length 89 [2020-10-29 07:31:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:13,170 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1068 transitions. [2020-10-29 07:31:13,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:31:13,171 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1068 transitions. [2020-10-29 07:31:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 07:31:13,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:13,174 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, 1, 1, 1, 1, 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 07:31:13,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:31:13,175 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:13,175 INFO L82 PathProgramCache]: Analyzing trace with hash 401704432, now seen corresponding path program 1 times [2020-10-29 07:31:13,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:13,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200174890] [2020-10-29 07:31:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:13,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:13,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:13,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:31:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:31:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-29 07:31:13,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:13,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:13,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:31:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:31:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:31:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:13,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:31:13,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:31:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:31:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:31:14,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200174890] [2020-10-29 07:31:14,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:31:14,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:31:14,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830654258] [2020-10-29 07:31:14,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:31:14,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:14,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:31:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:31:14,243 INFO L87 Difference]: Start difference. First operand 753 states and 1068 transitions. Second operand 7 states. [2020-10-29 07:31:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:16,722 INFO L93 Difference]: Finished difference Result 1890 states and 2719 transitions. [2020-10-29 07:31:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:31:16,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-10-29 07:31:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:16,739 INFO L225 Difference]: With dead ends: 1890 [2020-10-29 07:31:16,740 INFO L226 Difference]: Without dead ends: 1143 [2020-10-29 07:31:16,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:31:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-10-29 07:31:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1133. [2020-10-29 07:31:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1133 states. [2020-10-29 07:31:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1133 states to 1133 states and 1548 transitions. [2020-10-29 07:31:16,809 INFO L78 Accepts]: Start accepts. Automaton has 1133 states and 1548 transitions. Word has length 90 [2020-10-29 07:31:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:16,810 INFO L481 AbstractCegarLoop]: Abstraction has 1133 states and 1548 transitions. [2020-10-29 07:31:16,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:31:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1133 states and 1548 transitions. [2020-10-29 07:31:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 07:31:16,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:16,825 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, 1, 1, 1, 1, 1, 1, 1, 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 07:31:16,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:31:16,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:16,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1990237972, now seen corresponding path program 1 times [2020-10-29 07:31:16,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:16,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921281096] [2020-10-29 07:31:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:16,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:17,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:17,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:31:17,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:31:17,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:31:17,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:18,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:31:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:18,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:18,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:31:18,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:18,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:31:18,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:18,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:31:18,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:31:18,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921281096] [2020-10-29 07:31:18,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:31:18,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:31:18,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668853467] [2020-10-29 07:31:18,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:31:18,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:18,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:31:18,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:31:18,478 INFO L87 Difference]: Start difference. First operand 1133 states and 1548 transitions. Second operand 7 states. [2020-10-29 07:31:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:21,002 INFO L93 Difference]: Finished difference Result 2492 states and 3464 transitions. [2020-10-29 07:31:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:31:21,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-29 07:31:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:21,013 INFO L225 Difference]: With dead ends: 2492 [2020-10-29 07:31:21,014 INFO L226 Difference]: Without dead ends: 1365 [2020-10-29 07:31:21,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:31:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-29 07:31:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1315. [2020-10-29 07:31:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-29 07:31:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1738 transitions. [2020-10-29 07:31:21,085 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1738 transitions. Word has length 93 [2020-10-29 07:31:21,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:21,085 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1738 transitions. [2020-10-29 07:31:21,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:31:21,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1738 transitions. [2020-10-29 07:31:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 07:31:21,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:21,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:21,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:31:21,088 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1416728916, now seen corresponding path program 1 times [2020-10-29 07:31:21,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:21,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076878233] [2020-10-29 07:31:21,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:21,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:21,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:31:21,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 07:31:21,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:21,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:21,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-29 07:31:21,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 07:31:21,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:21,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:21,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:21,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:21,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:21,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:21,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:31:21,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:21,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:31:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:31:21,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076878233] [2020-10-29 07:31:21,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:31:21,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:31:21,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536756893] [2020-10-29 07:31:21,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:31:21,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:21,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:31:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:31:21,599 INFO L87 Difference]: Start difference. First operand 1315 states and 1738 transitions. Second operand 5 states. [2020-10-29 07:31:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:23,714 INFO L93 Difference]: Finished difference Result 2812 states and 3831 transitions. [2020-10-29 07:31:23,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:31:23,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-29 07:31:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:23,724 INFO L225 Difference]: With dead ends: 2812 [2020-10-29 07:31:23,724 INFO L226 Difference]: Without dead ends: 1685 [2020-10-29 07:31:23,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:31:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-10-29 07:31:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1497. [2020-10-29 07:31:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-10-29 07:31:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1928 transitions. [2020-10-29 07:31:23,778 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1928 transitions. Word has length 104 [2020-10-29 07:31:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:23,779 INFO L481 AbstractCegarLoop]: Abstraction has 1497 states and 1928 transitions. [2020-10-29 07:31:23,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:31:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1928 transitions. [2020-10-29 07:31:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 07:31:23,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:23,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:31:23,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:31:23,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1918818508, now seen corresponding path program 1 times [2020-10-29 07:31:23,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:23,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972071140] [2020-10-29 07:31:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:25,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:26,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:26,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:31:26,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:31:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2209 [2020-10-29 07:31:26,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:26,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:31:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:31:26,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:31:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:26,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:26,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:26,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:31:26,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:26,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:26,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:26,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:31:26,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:26,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:31:26,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:26,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:31:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:31:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:26,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:26,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:26,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:31:26,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:26,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:31:26,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 25 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:31:26,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972071140] [2020-10-29 07:31:26,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:31:26,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:31:26,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371405854] [2020-10-29 07:31:26,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:31:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:31:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:31:26,885 INFO L87 Difference]: Start difference. First operand 1497 states and 1928 transitions. Second operand 8 states. [2020-10-29 07:31:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:29,715 INFO L93 Difference]: Finished difference Result 3045 states and 3952 transitions. [2020-10-29 07:31:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:31:29,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-29 07:31:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:29,726 INFO L225 Difference]: With dead ends: 3045 [2020-10-29 07:31:29,727 INFO L226 Difference]: Without dead ends: 1530 [2020-10-29 07:31:29,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-29 07:31:29,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-29 07:31:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1493. [2020-10-29 07:31:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-10-29 07:31:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1720 transitions. [2020-10-29 07:31:29,780 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1720 transitions. Word has length 187 [2020-10-29 07:31:29,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:29,780 INFO L481 AbstractCegarLoop]: Abstraction has 1493 states and 1720 transitions. [2020-10-29 07:31:29,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:31:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1720 transitions. [2020-10-29 07:31:29,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:31:29,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:29,788 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:31:29,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:31:29,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:29,791 INFO L82 PathProgramCache]: Analyzing trace with hash -324488136, now seen corresponding path program 1 times [2020-10-29 07:31:29,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:29,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357207346] [2020-10-29 07:31:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:29,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:30,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:33,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:34,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 07:31:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:31:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 07:31:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:34,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 306 [2020-10-29 07:31:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:31:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:35,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:35,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:35,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:35,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:31:35,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:35,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:35,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:35,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:35,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:35,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:35,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:31:35,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:35,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:31:35,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:35,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:35,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:35,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:31:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:35,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:35,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:35,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:31:35,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:35,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:31:35,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:35,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:35,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:31:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:35,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:31:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-10-29 07:31:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:35,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:35,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:31:35,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:35,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:31:35,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 07:31:35,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357207346] [2020-10-29 07:31:35,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:31:35,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:31:35,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745429693] [2020-10-29 07:31:35,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:31:35,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:35,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:31:35,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:31:35,930 INFO L87 Difference]: Start difference. First operand 1493 states and 1720 transitions. Second operand 7 states. [2020-10-29 07:31:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:38,093 INFO L93 Difference]: Finished difference Result 2994 states and 3471 transitions. [2020-10-29 07:31:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:31:38,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 395 [2020-10-29 07:31:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:38,101 INFO L225 Difference]: With dead ends: 2994 [2020-10-29 07:31:38,101 INFO L226 Difference]: Without dead ends: 1503 [2020-10-29 07:31:38,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:31:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-10-29 07:31:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1489. [2020-10-29 07:31:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2020-10-29 07:31:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1629 transitions. [2020-10-29 07:31:38,148 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1629 transitions. Word has length 395 [2020-10-29 07:31:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:38,149 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 1629 transitions. [2020-10-29 07:31:38,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:31:38,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1629 transitions. [2020-10-29 07:31:38,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-29 07:31:38,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:38,160 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:38,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:31:38,160 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:38,161 INFO L82 PathProgramCache]: Analyzing trace with hash -661924684, now seen corresponding path program 1 times [2020-10-29 07:31:38,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:38,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900427873] [2020-10-29 07:31:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-29 07:31:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:31:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 07:31:43,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:43,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:31:43,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:31:43,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:43,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:43,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:43,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:43,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:43,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:43,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:43,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:31:43,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:31:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:43,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:43,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:43,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:31:43,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:43,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:31:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:44,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:44,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:31:44,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 07:31:44,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:44,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:31:44,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2020-10-29 07:31:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:44,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:44,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:31:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:31:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:44,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:31:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 274 proven. 73 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-10-29 07:31:44,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900427873] [2020-10-29 07:31:44,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:31:44,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:31:44,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027246330] [2020-10-29 07:31:44,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:31:44,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:44,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:31:44,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:31:44,596 INFO L87 Difference]: Start difference. First operand 1489 states and 1629 transitions. Second operand 7 states. [2020-10-29 07:31:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:46,546 INFO L93 Difference]: Finished difference Result 3364 states and 3796 transitions. [2020-10-29 07:31:46,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:31:46,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 492 [2020-10-29 07:31:46,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:46,561 INFO L225 Difference]: With dead ends: 3364 [2020-10-29 07:31:46,561 INFO L226 Difference]: Without dead ends: 2063 [2020-10-29 07:31:46,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:31:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2020-10-29 07:31:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2051. [2020-10-29 07:31:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-10-29 07:31:46,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2275 transitions. [2020-10-29 07:31:46,647 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2275 transitions. Word has length 492 [2020-10-29 07:31:46,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:46,648 INFO L481 AbstractCegarLoop]: Abstraction has 2051 states and 2275 transitions. [2020-10-29 07:31:46,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:31:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2275 transitions. [2020-10-29 07:31:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-29 07:31:46,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:46,663 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:31:46,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:31:46,664 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:46,664 INFO L82 PathProgramCache]: Analyzing trace with hash 405954276, now seen corresponding path program 1 times [2020-10-29 07:31:46,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:46,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509498981] [2020-10-29 07:31:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:51,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:31:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:51,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:31:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:51,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:51,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:31:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:52,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:31:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:52,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:52,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:31:52,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:52,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:31:52,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:52,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:31:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:31:52,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 07:31:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:52,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:52,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:31:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:31:52,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:31:52,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-10-29 07:31:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:53,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:31:53,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:31:53,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:31:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:31:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:31:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 298 proven. 73 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 07:31:53,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509498981] [2020-10-29 07:31:53,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:31:53,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:31:53,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765741606] [2020-10-29 07:31:53,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:31:53,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:31:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:31:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:31:53,806 INFO L87 Difference]: Start difference. First operand 2051 states and 2275 transitions. Second operand 8 states. [2020-10-29 07:31:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:31:56,611 INFO L93 Difference]: Finished difference Result 5584 states and 6397 transitions. [2020-10-29 07:31:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:31:56,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 516 [2020-10-29 07:31:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:31:56,633 INFO L225 Difference]: With dead ends: 5584 [2020-10-29 07:31:56,634 INFO L226 Difference]: Without dead ends: 3721 [2020-10-29 07:31:56,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:31:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3721 states. [2020-10-29 07:31:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3721 to 2801. [2020-10-29 07:31:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2801 states. [2020-10-29 07:31:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3124 transitions. [2020-10-29 07:31:56,729 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3124 transitions. Word has length 516 [2020-10-29 07:31:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:31:56,730 INFO L481 AbstractCegarLoop]: Abstraction has 2801 states and 3124 transitions. [2020-10-29 07:31:56,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:31:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3124 transitions. [2020-10-29 07:31:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-29 07:31:56,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:31:56,753 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:31:56,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:31:56,754 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:31:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:31:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash -682797976, now seen corresponding path program 1 times [2020-10-29 07:31:56,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:31:56,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778860288] [2020-10-29 07:31:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:31:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:31:56,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:57,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:31:59,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:01,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-29 07:32:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:32:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 410 [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:32:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:02,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:32:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:02,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:02,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:02,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:32:02,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:32:02,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-29 07:32:02,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:32:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:32:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:02,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-10-29 07:32:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:02,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:32:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 469 proven. 73 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2020-10-29 07:32:03,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778860288] [2020-10-29 07:32:03,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:03,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:03,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983720521] [2020-10-29 07:32:03,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:03,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:03,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:03,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:03,268 INFO L87 Difference]: Start difference. First operand 2801 states and 3124 transitions. Second operand 7 states. [2020-10-29 07:32:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:05,390 INFO L93 Difference]: Finished difference Result 6170 states and 7002 transitions. [2020-10-29 07:32:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:32:05,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-29 07:32:05,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:05,412 INFO L225 Difference]: With dead ends: 6170 [2020-10-29 07:32:05,412 INFO L226 Difference]: Without dead ends: 3557 [2020-10-29 07:32:05,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:32:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2020-10-29 07:32:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3357. [2020-10-29 07:32:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3357 states. [2020-10-29 07:32:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 3811 transitions. [2020-10-29 07:32:05,519 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 3811 transitions. Word has length 669 [2020-10-29 07:32:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:05,521 INFO L481 AbstractCegarLoop]: Abstraction has 3357 states and 3811 transitions. [2020-10-29 07:32:05,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:05,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 3811 transitions. [2020-10-29 07:32:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2020-10-29 07:32:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:05,532 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:05,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:32:05,532 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1167276212, now seen corresponding path program 1 times [2020-10-29 07:32:05,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:05,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591584586] [2020-10-29 07:32:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:05,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 767 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:10,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:10,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:10,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:10,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:10,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:10,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:10,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:10,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:10,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:11,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:11,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:32:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:11,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:11,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:11,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:32:11,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:32:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-29 07:32:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:11,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2020-10-29 07:32:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:32:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 659 [2020-10-29 07:32:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:11,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:11,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:32:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 314 proven. 320 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2020-10-29 07:32:11,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591584586] [2020-10-29 07:32:11,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:11,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:11,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094960659] [2020-10-29 07:32:11,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:11,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:11,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:11,997 INFO L87 Difference]: Start difference. First operand 3357 states and 3811 transitions. Second operand 7 states. [2020-10-29 07:32:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:13,959 INFO L93 Difference]: Finished difference Result 7082 states and 8189 transitions. [2020-10-29 07:32:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:32:13,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 745 [2020-10-29 07:32:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:13,981 INFO L225 Difference]: With dead ends: 7082 [2020-10-29 07:32:13,981 INFO L226 Difference]: Without dead ends: 3913 [2020-10-29 07:32:13,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:32:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3913 states. [2020-10-29 07:32:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3913 to 3729. [2020-10-29 07:32:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3729 states. [2020-10-29 07:32:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 4236 transitions. [2020-10-29 07:32:14,094 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 4236 transitions. Word has length 745 [2020-10-29 07:32:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:14,095 INFO L481 AbstractCegarLoop]: Abstraction has 3729 states and 4236 transitions. [2020-10-29 07:32:14,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 4236 transitions. [2020-10-29 07:32:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-10-29 07:32:14,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:14,106 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:14,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:32:14,106 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:14,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1641291784, now seen corresponding path program 1 times [2020-10-29 07:32:14,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:14,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6331185] [2020-10-29 07:32:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:14,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 790 [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:32:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:32:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:19,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:19,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:32:19,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:19,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:19,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:19,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:19,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:32:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:32:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:19,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:32:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:19,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:20,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:20,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:20,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:20,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-29 07:32:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:20,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1601 backedges. 586 proven. 73 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-10-29 07:32:20,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6331185] [2020-10-29 07:32:20,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:20,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:20,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372084194] [2020-10-29 07:32:20,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:20,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:20,497 INFO L87 Difference]: Start difference. First operand 3729 states and 4236 transitions. Second operand 7 states. [2020-10-29 07:32:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:22,599 INFO L93 Difference]: Finished difference Result 7646 states and 8702 transitions. [2020-10-29 07:32:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:32:22,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 768 [2020-10-29 07:32:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:22,617 INFO L225 Difference]: With dead ends: 7646 [2020-10-29 07:32:22,617 INFO L226 Difference]: Without dead ends: 4105 [2020-10-29 07:32:22,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:32:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-29 07:32:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3733. [2020-10-29 07:32:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-10-29 07:32:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4248 transitions. [2020-10-29 07:32:22,721 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4248 transitions. Word has length 768 [2020-10-29 07:32:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:22,722 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 4248 transitions. [2020-10-29 07:32:22,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4248 transitions. [2020-10-29 07:32:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2020-10-29 07:32:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:22,732 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:22,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:32:22,733 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash -615257316, now seen corresponding path program 1 times [2020-10-29 07:32:22,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:22,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650847331] [2020-10-29 07:32:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:22,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:27,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 791 [2020-10-29 07:32:27,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:27,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:27,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:28,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:32:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 07:32:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:32:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-10-29 07:32:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:32:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 07:32:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:28,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:32:28,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:32:28,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-10-29 07:32:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:28,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:32:28,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:28,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1519 backedges. 338 proven. 320 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-29 07:32:29,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650847331] [2020-10-29 07:32:29,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:29,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:29,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120826064] [2020-10-29 07:32:29,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:29,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:29,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:29,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:29,144 INFO L87 Difference]: Start difference. First operand 3733 states and 4248 transitions. Second operand 7 states. [2020-10-29 07:32:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:31,430 INFO L93 Difference]: Finished difference Result 7652 states and 8759 transitions. [2020-10-29 07:32:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:32:31,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 769 [2020-10-29 07:32:31,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:31,459 INFO L225 Difference]: With dead ends: 7652 [2020-10-29 07:32:31,460 INFO L226 Difference]: Without dead ends: 3919 [2020-10-29 07:32:31,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:32:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2020-10-29 07:32:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 3735. [2020-10-29 07:32:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2020-10-29 07:32:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 4217 transitions. [2020-10-29 07:32:31,584 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 4217 transitions. Word has length 769 [2020-10-29 07:32:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:31,584 INFO L481 AbstractCegarLoop]: Abstraction has 3735 states and 4217 transitions. [2020-10-29 07:32:31,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 4217 transitions. [2020-10-29 07:32:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2020-10-29 07:32:31,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:31,601 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:31,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:32:31,602 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1152245012, now seen corresponding path program 1 times [2020-10-29 07:32:31,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:31,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104357635] [2020-10-29 07:32:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:36,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 868 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:32:36,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:36,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:36,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:32:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:32:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:32:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:32:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:32:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:32:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:32:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-29 07:32:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:37,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:32:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:32:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:37,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 07:32:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 423 proven. 146 refuted. 0 times theorem prover too weak. 1498 trivial. 0 not checked. [2020-10-29 07:32:37,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104357635] [2020-10-29 07:32:37,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:37,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:37,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434208950] [2020-10-29 07:32:37,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:37,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:37,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:37,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:37,899 INFO L87 Difference]: Start difference. First operand 3735 states and 4217 transitions. Second operand 7 states. [2020-10-29 07:32:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:39,739 INFO L93 Difference]: Finished difference Result 8380 states and 9589 transitions. [2020-10-29 07:32:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:32:39,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 844 [2020-10-29 07:32:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:39,753 INFO L225 Difference]: With dead ends: 8380 [2020-10-29 07:32:39,753 INFO L226 Difference]: Without dead ends: 4833 [2020-10-29 07:32:39,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:32:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2020-10-29 07:32:39,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4283. [2020-10-29 07:32:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4283 states. [2020-10-29 07:32:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4283 states to 4283 states and 4875 transitions. [2020-10-29 07:32:39,857 INFO L78 Accepts]: Start accepts. Automaton has 4283 states and 4875 transitions. Word has length 844 [2020-10-29 07:32:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:39,857 INFO L481 AbstractCegarLoop]: Abstraction has 4283 states and 4875 transitions. [2020-10-29 07:32:39,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4283 states and 4875 transitions. [2020-10-29 07:32:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2020-10-29 07:32:39,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:39,868 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:39,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:32:39,868 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 474292864, now seen corresponding path program 1 times [2020-10-29 07:32:39,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:39,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619603500] [2020-10-29 07:32:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 897 [2020-10-29 07:32:45,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:32:45,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 07:32:45,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 343 [2020-10-29 07:32:45,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:45,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:32:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-29 07:32:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:32:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2020-10-29 07:32:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2020-10-29 07:32:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2020-10-29 07:32:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:45,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 07:32:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 450 proven. 338 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2020-10-29 07:32:46,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619603500] [2020-10-29 07:32:46,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:46,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:32:46,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126992225] [2020-10-29 07:32:46,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:32:46,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:46,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:32:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:32:46,355 INFO L87 Difference]: Start difference. First operand 4283 states and 4875 transitions. Second operand 7 states. [2020-10-29 07:32:48,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:48,234 INFO L93 Difference]: Finished difference Result 8934 states and 10200 transitions. [2020-10-29 07:32:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:32:48,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 873 [2020-10-29 07:32:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:48,251 INFO L225 Difference]: With dead ends: 8934 [2020-10-29 07:32:48,251 INFO L226 Difference]: Without dead ends: 4839 [2020-10-29 07:32:48,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:32:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2020-10-29 07:32:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4649. [2020-10-29 07:32:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4649 states. [2020-10-29 07:32:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 5280 transitions. [2020-10-29 07:32:48,359 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 5280 transitions. Word has length 873 [2020-10-29 07:32:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:48,360 INFO L481 AbstractCegarLoop]: Abstraction has 4649 states and 5280 transitions. [2020-10-29 07:32:48,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:32:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 5280 transitions. [2020-10-29 07:32:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-29 07:32:48,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:48,372 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:48,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:32:48,373 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1523035412, now seen corresponding path program 1 times [2020-10-29 07:32:48,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:48,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245636639] [2020-10-29 07:32:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:48,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 904 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 07:32:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:32:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:53,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:53,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:32:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:53,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:32:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:53,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:32:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:32:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:53,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:32:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:53,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:32:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:32:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:53,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:32:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:32:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:54,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:32:54,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:32:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:54,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:32:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:32:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:32:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:32:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:32:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:32:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:54,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:32:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:54,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:32:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:32:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 1119 proven. 91 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2020-10-29 07:32:55,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245636639] [2020-10-29 07:32:55,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:32:55,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:32:55,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137507178] [2020-10-29 07:32:55,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:32:55,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:32:55,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:32:55,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:32:55,037 INFO L87 Difference]: Start difference. First operand 4649 states and 5280 transitions. Second operand 10 states. [2020-10-29 07:32:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:32:58,425 INFO L93 Difference]: Finished difference Result 10958 states and 12544 transitions. [2020-10-29 07:32:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:32:58,431 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 880 [2020-10-29 07:32:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:32:58,451 INFO L225 Difference]: With dead ends: 10958 [2020-10-29 07:32:58,451 INFO L226 Difference]: Without dead ends: 6497 [2020-10-29 07:32:58,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:32:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6497 states. [2020-10-29 07:32:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6497 to 5939. [2020-10-29 07:32:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5939 states. [2020-10-29 07:32:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 6841 transitions. [2020-10-29 07:32:58,586 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 6841 transitions. Word has length 880 [2020-10-29 07:32:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:32:58,587 INFO L481 AbstractCegarLoop]: Abstraction has 5939 states and 6841 transitions. [2020-10-29 07:32:58,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:32:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 6841 transitions. [2020-10-29 07:32:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-29 07:32:58,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:32:58,602 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:32:58,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:32:58,603 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:32:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:32:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash -351434920, now seen corresponding path program 1 times [2020-10-29 07:32:58,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:32:58,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402044443] [2020-10-29 07:32:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:32:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:32:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:32:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:03,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:03,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-29 07:33:03,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:33:03,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 07:33:03,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:03,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:33:03,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:33:03,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:03,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:03,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:33:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:33:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:33:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:33:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-29 07:33:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:33:04,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:04,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 888 [2020-10-29 07:33:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:04,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:33:04,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2840 backedges. 481 proven. 435 refuted. 0 times theorem prover too weak. 1924 trivial. 0 not checked. [2020-10-29 07:33:05,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402044443] [2020-10-29 07:33:05,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:33:05,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:33:05,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285518232] [2020-10-29 07:33:05,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:33:05,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:33:05,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:33:05,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:33:05,846 INFO L87 Difference]: Start difference. First operand 5939 states and 6841 transitions. Second operand 8 states. [2020-10-29 07:33:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:33:08,762 INFO L93 Difference]: Finished difference Result 12616 states and 14609 transitions. [2020-10-29 07:33:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:33:08,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 980 [2020-10-29 07:33:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:33:08,796 INFO L225 Difference]: With dead ends: 12616 [2020-10-29 07:33:08,796 INFO L226 Difference]: Without dead ends: 6865 [2020-10-29 07:33:08,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:33:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2020-10-29 07:33:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6861. [2020-10-29 07:33:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6861 states. [2020-10-29 07:33:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 7662 transitions. [2020-10-29 07:33:08,962 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 7662 transitions. Word has length 980 [2020-10-29 07:33:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:33:08,963 INFO L481 AbstractCegarLoop]: Abstraction has 6861 states and 7662 transitions. [2020-10-29 07:33:08,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:33:08,963 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 7662 transitions. [2020-10-29 07:33:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2020-10-29 07:33:08,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:33:08,984 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:33:08,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:33:08,985 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:33:08,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:33:08,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1552675932, now seen corresponding path program 1 times [2020-10-29 07:33:08,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:33:08,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411092896] [2020-10-29 07:33:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:33:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:10,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1209 [2020-10-29 07:33:14,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 416 [2020-10-29 07:33:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:14,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:33:14,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:14,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:33:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:14,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:14,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:33:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:14,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:33:14,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:33:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:33:15,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:15,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:33:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:15,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:15,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:33:15,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:15,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:33:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:15,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:15,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:33:15,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:33:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:15,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:33:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:15,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1087 [2020-10-29 07:33:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:15,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:15,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:33:15,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 2143 proven. 449 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2020-10-29 07:33:17,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411092896] [2020-10-29 07:33:17,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:33:17,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 07:33:17,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127129033] [2020-10-29 07:33:17,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 07:33:17,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:33:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 07:33:17,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:33:17,349 INFO L87 Difference]: Start difference. First operand 6861 states and 7662 transitions. Second operand 11 states. [2020-10-29 07:33:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:33:21,304 INFO L93 Difference]: Finished difference Result 13728 states and 15338 transitions. [2020-10-29 07:33:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:33:21,306 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1179 [2020-10-29 07:33:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:33:21,325 INFO L225 Difference]: With dead ends: 13728 [2020-10-29 07:33:21,325 INFO L226 Difference]: Without dead ends: 7055 [2020-10-29 07:33:21,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:33:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2020-10-29 07:33:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 6675. [2020-10-29 07:33:21,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6675 states. [2020-10-29 07:33:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 7455 transitions. [2020-10-29 07:33:21,476 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 7455 transitions. Word has length 1179 [2020-10-29 07:33:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:33:21,477 INFO L481 AbstractCegarLoop]: Abstraction has 6675 states and 7455 transitions. [2020-10-29 07:33:21,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 07:33:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 7455 transitions. [2020-10-29 07:33:21,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1272 [2020-10-29 07:33:21,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:33:21,498 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:33:21,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:33:21,499 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:33:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:33:21,499 INFO L82 PathProgramCache]: Analyzing trace with hash -119252244, now seen corresponding path program 1 times [2020-10-29 07:33:21,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:33:21,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833530485] [2020-10-29 07:33:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:33:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:26,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:26,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1301 [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:26,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:33:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1013 [2020-10-29 07:33:26,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-29 07:33:26,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:26,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:33:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:26,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:26,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:33:27,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:33:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:27,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:33:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:27,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:27,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:33:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:27,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:33:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:33:27,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:33:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-29 07:33:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:27,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:33:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-29 07:33:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:27,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:27,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:33:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4636 backedges. 1787 proven. 30 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2020-10-29 07:33:28,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833530485] [2020-10-29 07:33:28,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:33:28,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:33:28,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452686525] [2020-10-29 07:33:28,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:33:28,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:33:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:33:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:33:28,810 INFO L87 Difference]: Start difference. First operand 6675 states and 7455 transitions. Second operand 7 states. [2020-10-29 07:33:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:33:30,708 INFO L93 Difference]: Finished difference Result 14488 states and 16276 transitions. [2020-10-29 07:33:30,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:33:30,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1271 [2020-10-29 07:33:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:33:30,730 INFO L225 Difference]: With dead ends: 14488 [2020-10-29 07:33:30,731 INFO L226 Difference]: Without dead ends: 8001 [2020-10-29 07:33:30,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:33:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8001 states. [2020-10-29 07:33:30,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8001 to 7593. [2020-10-29 07:33:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7593 states. [2020-10-29 07:33:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 8382 transitions. [2020-10-29 07:33:30,889 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 8382 transitions. Word has length 1271 [2020-10-29 07:33:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:33:30,891 INFO L481 AbstractCegarLoop]: Abstraction has 7593 states and 8382 transitions. [2020-10-29 07:33:30,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:33:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 8382 transitions. [2020-10-29 07:33:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2020-10-29 07:33:30,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:33:30,915 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:33:30,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:33:30,915 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:33:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:33:30,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2117465724, now seen corresponding path program 1 times [2020-10-29 07:33:30,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:33:30,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619423179] [2020-10-29 07:33:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:33:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1445 [2020-10-29 07:33:36,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1013 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 317 [2020-10-29 07:33:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:33:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:36,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-29 07:33:36,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:33:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:36,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:36,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:33:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:36,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:36,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:33:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:37,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:37,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:37,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:37,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:33:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:37,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:33:37,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-29 07:33:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 07:33:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-29 07:33:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:37,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 07:33:37,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:37,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:33:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:37,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 07:33:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1309 [2020-10-29 07:33:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:37,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:33:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:37,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:33:37,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:37,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 07:33:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5838 backedges. 2041 proven. 182 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2020-10-29 07:33:39,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619423179] [2020-10-29 07:33:39,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:33:39,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:33:39,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649506536] [2020-10-29 07:33:39,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:33:39,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:33:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:33:39,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:33:39,171 INFO L87 Difference]: Start difference. First operand 7593 states and 8382 transitions. Second operand 7 states. [2020-10-29 07:33:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:33:41,974 INFO L93 Difference]: Finished difference Result 16112 states and 17801 transitions. [2020-10-29 07:33:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:33:41,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1413 [2020-10-29 07:33:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:33:42,002 INFO L225 Difference]: With dead ends: 16112 [2020-10-29 07:33:42,003 INFO L226 Difference]: Without dead ends: 8707 [2020-10-29 07:33:42,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:33:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2020-10-29 07:33:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 7963. [2020-10-29 07:33:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7963 states. [2020-10-29 07:33:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 8753 transitions. [2020-10-29 07:33:42,183 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 8753 transitions. Word has length 1413 [2020-10-29 07:33:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:33:42,185 INFO L481 AbstractCegarLoop]: Abstraction has 7963 states and 8753 transitions. [2020-10-29 07:33:42,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:33:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 8753 transitions. [2020-10-29 07:33:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2020-10-29 07:33:42,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:33:42,213 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:33:42,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:33:42,214 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:33:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:33:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1458076380, now seen corresponding path program 1 times [2020-10-29 07:33:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:33:42,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372567938] [2020-10-29 07:33:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:33:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1493 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:33:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 306 [2020-10-29 07:33:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:33:47,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:47,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:33:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:47,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:33:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:48,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:48,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:48,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:48,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:33:48,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:48,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:48,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:48,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:33:48,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:48,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:33:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:48,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:48,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-10-29 07:33:48,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:48,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:33:48,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:48,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:33:48,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:48,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:33:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:49,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:49,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 07:33:49,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:49,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 997 [2020-10-29 07:33:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:49,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:33:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 07:33:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-29 07:33:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:49,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1179 [2020-10-29 07:33:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:49,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:49,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:33:49,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:33:49,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:49,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-10-29 07:33:49,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:49,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1357 [2020-10-29 07:33:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:50,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:50,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:33:50,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:33:50,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:50,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 07:33:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:33:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5991 backedges. 1655 proven. 803 refuted. 0 times theorem prover too weak. 3533 trivial. 0 not checked. [2020-10-29 07:33:51,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372567938] [2020-10-29 07:33:51,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:33:51,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 07:33:51,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172639779] [2020-10-29 07:33:51,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 07:33:51,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:33:51,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 07:33:51,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:33:51,643 INFO L87 Difference]: Start difference. First operand 7963 states and 8753 transitions. Second operand 11 states. [2020-10-29 07:33:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:33:55,733 INFO L93 Difference]: Finished difference Result 16136 states and 17717 transitions. [2020-10-29 07:33:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 07:33:55,734 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1461 [2020-10-29 07:33:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:33:55,751 INFO L225 Difference]: With dead ends: 16136 [2020-10-29 07:33:55,751 INFO L226 Difference]: Without dead ends: 8361 [2020-10-29 07:33:55,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2020-10-29 07:33:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8361 states. [2020-10-29 07:33:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8361 to 8161. [2020-10-29 07:33:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8161 states. [2020-10-29 07:33:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8161 states to 8161 states and 8946 transitions. [2020-10-29 07:33:55,929 INFO L78 Accepts]: Start accepts. Automaton has 8161 states and 8946 transitions. Word has length 1461 [2020-10-29 07:33:55,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:33:55,931 INFO L481 AbstractCegarLoop]: Abstraction has 8161 states and 8946 transitions. [2020-10-29 07:33:55,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 07:33:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand 8161 states and 8946 transitions. [2020-10-29 07:33:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1580 [2020-10-29 07:33:56,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:33:56,112 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:33:56,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:33:56,112 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:33:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:33:56,113 INFO L82 PathProgramCache]: Analyzing trace with hash 651176172, now seen corresponding path program 1 times [2020-10-29 07:33:56,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:33:56,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939013542] [2020-10-29 07:33:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:33:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:58,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1613 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2310 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1497 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:33:58,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:58,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:33:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:58,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:58,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:33:58,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:33:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:58,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:33:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:33:59,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:33:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:33:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:33:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:33:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:33:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:33:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:33:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:33:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:33:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:33:59,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:33:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:33:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:33:59,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:33:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:33:59,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:33:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1475 [2020-10-29 07:33:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:33:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:33:59,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:33:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:33:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:33:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:33:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7178 backedges. 1146 proven. 2 refuted. 0 times theorem prover too weak. 6030 trivial. 0 not checked. [2020-10-29 07:34:01,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939013542] [2020-10-29 07:34:01,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:01,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:01,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099147174] [2020-10-29 07:34:01,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:01,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:01,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:01,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:01,172 INFO L87 Difference]: Start difference. First operand 8161 states and 8946 transitions. Second operand 7 states. [2020-10-29 07:34:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:03,180 INFO L93 Difference]: Finished difference Result 17084 states and 18798 transitions. [2020-10-29 07:34:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:34:03,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1579 [2020-10-29 07:34:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:03,205 INFO L225 Difference]: With dead ends: 17084 [2020-10-29 07:34:03,205 INFO L226 Difference]: Without dead ends: 7627 [2020-10-29 07:34:03,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7627 states. [2020-10-29 07:34:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7627 to 7405. [2020-10-29 07:34:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7405 states. [2020-10-29 07:34:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 7951 transitions. [2020-10-29 07:34:03,362 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 7951 transitions. Word has length 1579 [2020-10-29 07:34:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:03,364 INFO L481 AbstractCegarLoop]: Abstraction has 7405 states and 7951 transitions. [2020-10-29 07:34:03,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:03,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 7951 transitions. [2020-10-29 07:34:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1618 [2020-10-29 07:34:03,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:03,397 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:03,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:34:03,397 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash 4179112, now seen corresponding path program 1 times [2020-10-29 07:34:03,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:03,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478779255] [2020-10-29 07:34:03,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:05,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:06,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1653 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1537 [2020-10-29 07:34:08,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:34:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:08,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:08,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:08,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:08,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:34:08,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:34:08,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:08,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:08,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:34:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:08,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:34:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:34:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:34:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:34:09,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:34:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:34:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:34:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:34:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 07:34:09,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:34:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:34:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:34:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:34:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:34:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1408 [2020-10-29 07:34:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:34:09,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:34:09,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:09,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:34:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1513 [2020-10-29 07:34:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:09,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:09,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:34:09,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8142 backedges. 1252 proven. 2 refuted. 0 times theorem prover too weak. 6888 trivial. 0 not checked. [2020-10-29 07:34:11,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478779255] [2020-10-29 07:34:11,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:11,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:11,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100284479] [2020-10-29 07:34:11,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:11,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:11,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:11,794 INFO L87 Difference]: Start difference. First operand 7405 states and 7951 transitions. Second operand 7 states. [2020-10-29 07:34:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:13,814 INFO L93 Difference]: Finished difference Result 14458 states and 15563 transitions. [2020-10-29 07:34:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:34:13,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1617 [2020-10-29 07:34:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:13,829 INFO L225 Difference]: With dead ends: 14458 [2020-10-29 07:34:13,829 INFO L226 Difference]: Without dead ends: 5027 [2020-10-29 07:34:13,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2020-10-29 07:34:13,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4993. [2020-10-29 07:34:13,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4993 states. [2020-10-29 07:34:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4993 states to 4993 states and 5216 transitions. [2020-10-29 07:34:13,935 INFO L78 Accepts]: Start accepts. Automaton has 4993 states and 5216 transitions. Word has length 1617 [2020-10-29 07:34:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:13,937 INFO L481 AbstractCegarLoop]: Abstraction has 4993 states and 5216 transitions. [2020-10-29 07:34:13,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4993 states and 5216 transitions. [2020-10-29 07:34:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1640 [2020-10-29 07:34:13,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:13,968 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:13,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 07:34:13,968 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:13,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:13,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1941023228, now seen corresponding path program 1 times [2020-10-29 07:34:13,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:13,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635308058] [2020-10-29 07:34:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1675 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1432 [2020-10-29 07:34:15,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 07:34:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:34:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:34:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:34:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:34:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:15,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:34:15,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:15,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:34:15,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:15,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:34:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:34:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:34:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:34:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:34:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:34:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:16,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:34:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:16,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:16,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:34:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:34:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:17,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:17,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:34:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:17,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1535 [2020-10-29 07:34:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:17,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:17,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-29 07:34:17,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:17,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8276 backedges. 1441 proven. 91 refuted. 0 times theorem prover too weak. 6744 trivial. 0 not checked. [2020-10-29 07:34:18,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635308058] [2020-10-29 07:34:18,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:18,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:18,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363544187] [2020-10-29 07:34:18,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:18,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:18,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:18,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:18,463 INFO L87 Difference]: Start difference. First operand 4993 states and 5216 transitions. Second operand 7 states. [2020-10-29 07:34:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:20,566 INFO L93 Difference]: Finished difference Result 9798 states and 10243 transitions. [2020-10-29 07:34:20,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:34:20,567 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1639 [2020-10-29 07:34:20,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:20,579 INFO L225 Difference]: With dead ends: 9798 [2020-10-29 07:34:20,579 INFO L226 Difference]: Without dead ends: 4995 [2020-10-29 07:34:20,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:34:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-29 07:34:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4993. [2020-10-29 07:34:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4993 states. [2020-10-29 07:34:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4993 states to 4993 states and 5200 transitions. [2020-10-29 07:34:20,680 INFO L78 Accepts]: Start accepts. Automaton has 4993 states and 5200 transitions. Word has length 1639 [2020-10-29 07:34:20,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:20,681 INFO L481 AbstractCegarLoop]: Abstraction has 4993 states and 5200 transitions. [2020-10-29 07:34:20,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4993 states and 5200 transitions. [2020-10-29 07:34:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2020-10-29 07:34:20,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:20,713 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:20,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 07:34:20,713 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1782801664, now seen corresponding path program 1 times [2020-10-29 07:34:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:20,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816262200] [2020-10-29 07:34:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:21,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1677 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1561 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:34:22,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:34:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:22,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:22,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:22,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:34:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:34:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:22,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:22,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:22,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:34:22,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:22,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:34:22,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:22,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:22,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:22,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:34:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:34:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:34:23,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:34:23,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:34:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:34:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:34:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:34:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-29 07:34:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:34:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1115 [2020-10-29 07:34:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-29 07:34:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:34:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1297 [2020-10-29 07:34:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 07:34:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:34:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:34:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:34:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1410 [2020-10-29 07:34:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:34:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:34:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 07:34:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1537 [2020-10-29 07:34:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:34:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:34:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:34:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:34:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 07:34:23,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:34:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8284 backedges. 1252 proven. 2 refuted. 0 times theorem prover too weak. 7030 trivial. 0 not checked. [2020-10-29 07:34:25,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816262200] [2020-10-29 07:34:25,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:34:25,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:34:25,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929979805] [2020-10-29 07:34:25,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:34:25,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:34:25,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:34:25,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:34:25,196 INFO L87 Difference]: Start difference. First operand 4993 states and 5200 transitions. Second operand 7 states. [2020-10-29 07:34:27,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:34:27,182 INFO L93 Difference]: Finished difference Result 9798 states and 10211 transitions. [2020-10-29 07:34:27,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:34:27,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1641 [2020-10-29 07:34:27,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:34:27,194 INFO L225 Difference]: With dead ends: 9798 [2020-10-29 07:34:27,195 INFO L226 Difference]: Without dead ends: 4995 [2020-10-29 07:34:27,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:34:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-10-29 07:34:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4993. [2020-10-29 07:34:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4993 states. [2020-10-29 07:34:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4993 states to 4993 states and 5188 transitions. [2020-10-29 07:34:27,299 INFO L78 Accepts]: Start accepts. Automaton has 4993 states and 5188 transitions. Word has length 1641 [2020-10-29 07:34:27,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:34:27,301 INFO L481 AbstractCegarLoop]: Abstraction has 4993 states and 5188 transitions. [2020-10-29 07:34:27,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:34:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4993 states and 5188 transitions. [2020-10-29 07:34:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1767 [2020-10-29 07:34:27,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:34:27,406 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:34:27,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 07:34:27,406 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:34:27,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:34:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1796886212, now seen corresponding path program 1 times [2020-10-29 07:34:27,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:34:27,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474324478] [2020-10-29 07:34:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:34:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 07:34:27,713 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 07:34:27,714 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 07:34:27,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25