/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/Problem15_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:43:25,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:43:25,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:43:25,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:43:25,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:43:25,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:43:25,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:43:25,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:43:25,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:43:25,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:43:25,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:43:25,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:43:25,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:43:25,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:43:25,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:43:25,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:43:25,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:43:25,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:43:25,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:43:25,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:43:25,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:43:25,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:43:25,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:43:25,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:43:25,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:43:25,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:43:25,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:43:25,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:43:25,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:43:25,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:43:25,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:43:25,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:43:25,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:43:25,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:43:25,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:43:25,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:43:25,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:43:25,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:43:25,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:43:25,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:43:25,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:43:25,255 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 07:43:25,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:43:25,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:43:25,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:43:25,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:43:25,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:43:25,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:43:25,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:43:25,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:43:25,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:43:25,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:43:25,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:43:25,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:43:25,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:43:25,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:43:25,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:43:25,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:43:25,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:25,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:43:25,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:43:25,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:43:25,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:43:25,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:43:25,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:43:25,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:43:25,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:43:25,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:43:25,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:43:25,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:43:25,775 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:43:25,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:43:25,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-29 07:43:25,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65d52391b/99fc9346822f42108ce3b6530e9aea0d/FLAG60702f1ef [2020-10-29 07:43:26,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:43:26,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-29 07:43:26,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65d52391b/99fc9346822f42108ce3b6530e9aea0d/FLAG60702f1ef [2020-10-29 07:43:26,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65d52391b/99fc9346822f42108ce3b6530e9aea0d [2020-10-29 07:43:26,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:43:26,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:43:26,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:26,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:43:26,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:43:26,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:26" (1/1) ... [2020-10-29 07:43:26,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc4ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:26, skipping insertion in model container [2020-10-29 07:43:26,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:26" (1/1) ... [2020-10-29 07:43:26,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:43:27,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:43:27,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:27,982 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:43:28,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:28,409 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:43:28,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28 WrapperNode [2020-10-29 07:43:28,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:28,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:43:28,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:43:28,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:43:28,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (1/1) ... [2020-10-29 07:43:28,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:43:28,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:43:28,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:43:28,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:43:28,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (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 07:43:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:43:28,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:43:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:43:28,724 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:43:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:43:28,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:43:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:43:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:43:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:43:28,727 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:43:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:43:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:43:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:43:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:43:28,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:43:28,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:43:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:43:28,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:43:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:43:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:43:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:43:32,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:43:32,035 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:43:32,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:32 BoogieIcfgContainer [2020-10-29 07:43:32,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:43:32,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:43:32,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:43:32,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:43:32,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:43:26" (1/3) ... [2020-10-29 07:43:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6446ce46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:32, skipping insertion in model container [2020-10-29 07:43:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:28" (2/3) ... [2020-10-29 07:43:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6446ce46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:32, skipping insertion in model container [2020-10-29 07:43:32,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:32" (3/3) ... [2020-10-29 07:43:32,050 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label15.c [2020-10-29 07:43:32,068 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:43:32,075 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:43:32,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:43:32,142 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:43:32,142 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:43:32,142 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:43:32,143 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:43:32,143 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:43:32,143 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:43:32,143 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:43:32,143 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:43:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:43:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 07:43:32,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:32,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:32,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:32,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash 270678297, now seen corresponding path program 1 times [2020-10-29 07:43:32,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:32,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848039363] [2020-10-29 07:43:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:32,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 07:43:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-29 07:43:32,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:32,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:32,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 07:43:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:43:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:33,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:33,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:33,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:33,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:33,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:33,270 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 07:43:33,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848039363] [2020-10-29 07:43:33,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:33,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:43:33,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808272486] [2020-10-29 07:43:33,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:43:33,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:33,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:43:33,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:43:33,307 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:43:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:39,547 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-29 07:43:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:43:39,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-29 07:43:39,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:39,573 INFO L225 Difference]: With dead ends: 1250 [2020-10-29 07:43:39,573 INFO L226 Difference]: Without dead ends: 730 [2020-10-29 07:43:39,589 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 07:43:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-29 07:43:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-29 07:43:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:43:39,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-29 07:43:39,727 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 26 [2020-10-29 07:43:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:39,727 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-29 07:43:39,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:43:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-29 07:43:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 07:43:39,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:39,733 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-29 07:43:39,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:43:39,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:39,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:39,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1013953042, now seen corresponding path program 1 times [2020-10-29 07:43:39,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:39,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062810019] [2020-10-29 07:43:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:43:41,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:41,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1997 [2020-10-29 07:43:41,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:41,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:43:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:41,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:41,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:41,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:41,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:43:41,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:41,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:42,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:42,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:42,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:43:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-29 07:43:42,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:42,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:43:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:42,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062810019] [2020-10-29 07:43:42,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:42,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:43:42,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626309577] [2020-10-29 07:43:42,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:42,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:42,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:42,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:42,342 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-29 07:43:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:49,394 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-29 07:43:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:43:49,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-29 07:43:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:49,408 INFO L225 Difference]: With dead ends: 1776 [2020-10-29 07:43:49,408 INFO L226 Difference]: Without dead ends: 1069 [2020-10-29 07:43:49,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:43:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-29 07:43:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-29 07:43:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-29 07:43:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-29 07:43:49,506 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 95 [2020-10-29 07:43:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:49,507 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-29 07:43:49,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-29 07:43:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 07:43:49,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:49,511 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-10-29 07:43:49,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:43:49,511 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:49,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:49,512 INFO L82 PathProgramCache]: Analyzing trace with hash 356974578, now seen corresponding path program 1 times [2020-10-29 07:43:49,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:49,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263426518] [2020-10-29 07:43:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:43:50,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:50,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1067 [2020-10-29 07:43:50,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:50,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:43:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:43:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:50,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:43:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:43:50,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:50,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:43:50,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:51,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263426518] [2020-10-29 07:43:51,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:51,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:43:51,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898729777] [2020-10-29 07:43:51,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:51,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:51,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:51,036 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-29 07:43:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:57,380 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-29 07:43:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:43:57,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-29 07:43:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:57,394 INFO L225 Difference]: With dead ends: 2759 [2020-10-29 07:43:57,395 INFO L226 Difference]: Without dead ends: 1723 [2020-10-29 07:43:57,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:43:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-29 07:43:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-29 07:43:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-29 07:43:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-29 07:43:57,489 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 96 [2020-10-29 07:43:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:57,489 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-29 07:43:57,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-29 07:43:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 07:43:57,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:57,492 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:57,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:43:57,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash 770040618, now seen corresponding path program 1 times [2020-10-29 07:43:57,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:57,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354664364] [2020-10-29 07:43:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:57,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:43:58,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:43:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:58,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:58,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:58,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:43:58,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:43:58,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:58,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:43:58,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:58,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354664364] [2020-10-29 07:43:58,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:58,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:43:58,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956866092] [2020-10-29 07:43:58,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:58,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:58,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:58,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:58,716 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-29 07:44:06,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:06,065 INFO L93 Difference]: Finished difference Result 4308 states and 6253 transitions. [2020-10-29 07:44:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:44:06,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-29 07:44:06,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:06,085 INFO L225 Difference]: With dead ends: 4308 [2020-10-29 07:44:06,085 INFO L226 Difference]: Without dead ends: 2963 [2020-10-29 07:44:06,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:44:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-10-29 07:44:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2304. [2020-10-29 07:44:06,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-10-29 07:44:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3063 transitions. [2020-10-29 07:44:06,185 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3063 transitions. Word has length 100 [2020-10-29 07:44:06,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:06,185 INFO L481 AbstractCegarLoop]: Abstraction has 2304 states and 3063 transitions. [2020-10-29 07:44:06,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3063 transitions. [2020-10-29 07:44:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-29 07:44:06,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:06,193 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:06,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:44:06,193 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:06,194 INFO L82 PathProgramCache]: Analyzing trace with hash 803629766, now seen corresponding path program 1 times [2020-10-29 07:44:06,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:06,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945587071] [2020-10-29 07:44:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2005 [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-29 07:44:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:08,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:08,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:08,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:08,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:08,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:09,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:09,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:09,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:09,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-29 07:44:09,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:09,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:09,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:09,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:44:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:44:09,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945587071] [2020-10-29 07:44:09,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:09,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:44:09,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884652287] [2020-10-29 07:44:09,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:44:09,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:09,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:44:09,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:44:09,582 INFO L87 Difference]: Start difference. First operand 2304 states and 3063 transitions. Second operand 6 states. [2020-10-29 07:44:15,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:15,881 INFO L93 Difference]: Finished difference Result 3274 states and 4198 transitions. [2020-10-29 07:44:15,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:44:15,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 300 [2020-10-29 07:44:15,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:15,902 INFO L225 Difference]: With dead ends: 3274 [2020-10-29 07:44:15,902 INFO L226 Difference]: Without dead ends: 3271 [2020-10-29 07:44:15,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-29 07:44:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3237. [2020-10-29 07:44:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-10-29 07:44:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4142 transitions. [2020-10-29 07:44:16,017 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4142 transitions. Word has length 300 [2020-10-29 07:44:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:16,019 INFO L481 AbstractCegarLoop]: Abstraction has 3237 states and 4142 transitions. [2020-10-29 07:44:16,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:44:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4142 transitions. [2020-10-29 07:44:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-29 07:44:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:16,030 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:16,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:44:16,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:16,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1054634426, now seen corresponding path program 1 times [2020-10-29 07:44:16,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:16,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978340475] [2020-10-29 07:44:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:16,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:21,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:44:21,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:21,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-29 07:44:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:44:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:44:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:22,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:22,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:44:22,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:22,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:44:22,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:22,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:22,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:44:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-29 07:44:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:22,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:44:22,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:44:22,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:22,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:44:22,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:22,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 54 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:44:23,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978340475] [2020-10-29 07:44:23,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:23,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:23,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985619584] [2020-10-29 07:44:23,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:23,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:23,029 INFO L87 Difference]: Start difference. First operand 3237 states and 4142 transitions. Second operand 7 states. [2020-10-29 07:44:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:33,774 INFO L93 Difference]: Finished difference Result 6223 states and 8056 transitions. [2020-10-29 07:44:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:44:33,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-29 07:44:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:33,798 INFO L225 Difference]: With dead ends: 6223 [2020-10-29 07:44:33,799 INFO L226 Difference]: Without dead ends: 3299 [2020-10-29 07:44:33,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:44:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2020-10-29 07:44:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3237. [2020-10-29 07:44:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-10-29 07:44:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4136 transitions. [2020-10-29 07:44:33,918 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4136 transitions. Word has length 392 [2020-10-29 07:44:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:33,919 INFO L481 AbstractCegarLoop]: Abstraction has 3237 states and 4136 transitions. [2020-10-29 07:44:33,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4136 transitions. [2020-10-29 07:44:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-10-29 07:44:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:33,930 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:33,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:44:33,931 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:33,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1200415929, now seen corresponding path program 1 times [2020-10-29 07:44:33,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:33,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132776254] [2020-10-29 07:44:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-29 07:44:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 07:44:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:44:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 400 [2020-10-29 07:44:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:39,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:39,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:39,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:39,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:39,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:44:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:40,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:40,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:40,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:40,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:44:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:44:41,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132776254] [2020-10-29 07:44:41,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:41,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:44:41,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231550002] [2020-10-29 07:44:41,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:44:41,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:41,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:44:41,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:44:41,009 INFO L87 Difference]: Start difference. First operand 3237 states and 4136 transitions. Second operand 8 states. [2020-10-29 07:44:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:59,118 INFO L93 Difference]: Finished difference Result 9288 states and 12561 transitions. [2020-10-29 07:44:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 07:44:59,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 395 [2020-10-29 07:44:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:59,153 INFO L225 Difference]: With dead ends: 9288 [2020-10-29 07:44:59,154 INFO L226 Difference]: Without dead ends: 7928 [2020-10-29 07:44:59,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-29 07:44:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7928 states. [2020-10-29 07:44:59,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7928 to 6056. [2020-10-29 07:44:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6056 states. [2020-10-29 07:44:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 7693 transitions. [2020-10-29 07:44:59,370 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 7693 transitions. Word has length 395 [2020-10-29 07:44:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:59,371 INFO L481 AbstractCegarLoop]: Abstraction has 6056 states and 7693 transitions. [2020-10-29 07:44:59,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:44:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 7693 transitions. [2020-10-29 07:44:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 07:44:59,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:59,381 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:44:59,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:44:59,382 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 26475440, now seen corresponding path program 1 times [2020-10-29 07:44:59,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:59,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036825586] [2020-10-29 07:44:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:01,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:01,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 07:45:01,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1928 [2020-10-29 07:45:01,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:01,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:45:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:45:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:01,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:01,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:01,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:45:01,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:01,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:01,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:02,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:02,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:45:02,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:02,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:02,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:45:02,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 07:45:02,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:02,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:02,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:45:02,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:45:02,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036825586] [2020-10-29 07:45:02,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:02,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:45:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194126786] [2020-10-29 07:45:02,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:45:02,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:45:02,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:45:02,707 INFO L87 Difference]: Start difference. First operand 6056 states and 7693 transitions. Second operand 8 states. [2020-10-29 07:45:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:17,540 INFO L93 Difference]: Finished difference Result 16229 states and 22421 transitions. [2020-10-29 07:45:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:17,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-29 07:45:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:17,595 INFO L225 Difference]: With dead ends: 16229 [2020-10-29 07:45:17,595 INFO L226 Difference]: Without dead ends: 10795 [2020-10-29 07:45:17,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:45:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2020-10-29 07:45:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 10770. [2020-10-29 07:45:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10770 states. [2020-10-29 07:45:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10770 states to 10770 states and 14180 transitions. [2020-10-29 07:45:17,982 INFO L78 Accepts]: Start accepts. Automaton has 10770 states and 14180 transitions. Word has length 399 [2020-10-29 07:45:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:17,983 INFO L481 AbstractCegarLoop]: Abstraction has 10770 states and 14180 transitions. [2020-10-29 07:45:17,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:45:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10770 states and 14180 transitions. [2020-10-29 07:45:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-29 07:45:18,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:18,005 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:18,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:45:18,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1412126137, now seen corresponding path program 1 times [2020-10-29 07:45:18,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:18,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139228526] [2020-10-29 07:45:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:45:23,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:45:23,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:45:23,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:45:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:45:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:45:23,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 07:45:23,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:45:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:45:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:23,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:23,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:45:23,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-29 07:45:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:24,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:45:24,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 172 proven. 162 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-10-29 07:45:24,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139228526] [2020-10-29 07:45:24,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:24,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:24,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902867595] [2020-10-29 07:45:24,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:24,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:24,241 INFO L87 Difference]: Start difference. First operand 10770 states and 14180 transitions. Second operand 7 states. [2020-10-29 07:45:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:40,005 INFO L93 Difference]: Finished difference Result 23552 states and 33259 transitions. [2020-10-29 07:45:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:45:40,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 487 [2020-10-29 07:45:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:40,087 INFO L225 Difference]: With dead ends: 23552 [2020-10-29 07:45:40,087 INFO L226 Difference]: Without dead ends: 13384 [2020-10-29 07:45:40,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13384 states. [2020-10-29 07:45:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13384 to 13296. [2020-10-29 07:45:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13296 states. [2020-10-29 07:45:40,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13296 states to 13296 states and 16899 transitions. [2020-10-29 07:45:40,633 INFO L78 Accepts]: Start accepts. Automaton has 13296 states and 16899 transitions. Word has length 487 [2020-10-29 07:45:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:40,634 INFO L481 AbstractCegarLoop]: Abstraction has 13296 states and 16899 transitions. [2020-10-29 07:45:40,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 13296 states and 16899 transitions. [2020-10-29 07:45:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-29 07:45:40,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:40,651 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:40,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:45:40,652 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:40,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1634836556, now seen corresponding path program 1 times [2020-10-29 07:45:40,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:40,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39419678] [2020-10-29 07:45:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:43,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:45:43,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:45:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:45:43,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:43,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:43,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:44,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:45:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:44,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:45:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:45:44,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:44,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:45:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:44,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:45:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:44,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:45:44,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 166 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 07:45:44,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39419678] [2020-10-29 07:45:44,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:44,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:44,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756846088] [2020-10-29 07:45:45,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:45,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:45,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:45,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:45,001 INFO L87 Difference]: Start difference. First operand 13296 states and 16899 transitions. Second operand 7 states. [2020-10-29 07:45:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:58,444 INFO L93 Difference]: Finished difference Result 28218 states and 35993 transitions. [2020-10-29 07:45:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:45:58,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-29 07:45:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:58,509 INFO L225 Difference]: With dead ends: 28218 [2020-10-29 07:45:58,509 INFO L226 Difference]: Without dead ends: 15544 [2020-10-29 07:45:58,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:45:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15544 states. [2020-10-29 07:45:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15544 to 15208. [2020-10-29 07:45:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15208 states. [2020-10-29 07:45:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15208 states to 15208 states and 19109 transitions. [2020-10-29 07:45:58,945 INFO L78 Accepts]: Start accepts. Automaton has 15208 states and 19109 transitions. Word has length 494 [2020-10-29 07:45:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:58,946 INFO L481 AbstractCegarLoop]: Abstraction has 15208 states and 19109 transitions. [2020-10-29 07:45:58,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15208 states and 19109 transitions. [2020-10-29 07:45:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-29 07:45:58,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:58,959 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:45:58,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:45:58,960 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:58,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1855623271, now seen corresponding path program 1 times [2020-10-29 07:45:58,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:58,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222133008] [2020-10-29 07:45:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:03,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4371 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-29 07:46:03,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:46:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:03,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:03,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:03,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:03,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:46:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:03,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:46:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:46:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:04,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:04,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:04,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:46:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:46:04,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222133008] [2020-10-29 07:46:04,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:04,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:04,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376422684] [2020-10-29 07:46:04,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:04,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:04,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:04,480 INFO L87 Difference]: Start difference. First operand 15208 states and 19109 transitions. Second operand 7 states. [2020-10-29 07:46:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:15,983 INFO L93 Difference]: Finished difference Result 30234 states and 41417 transitions. [2020-10-29 07:46:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:15,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 551 [2020-10-29 07:46:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:16,068 INFO L225 Difference]: With dead ends: 30234 [2020-10-29 07:46:16,068 INFO L226 Difference]: Without dead ends: 18754 [2020-10-29 07:46:16,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18754 states. [2020-10-29 07:46:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18754 to 18653. [2020-10-29 07:46:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18653 states. [2020-10-29 07:46:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18653 states to 18653 states and 23265 transitions. [2020-10-29 07:46:16,729 INFO L78 Accepts]: Start accepts. Automaton has 18653 states and 23265 transitions. Word has length 551 [2020-10-29 07:46:16,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:16,730 INFO L481 AbstractCegarLoop]: Abstraction has 18653 states and 23265 transitions. [2020-10-29 07:46:16,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:16,730 INFO L276 IsEmpty]: Start isEmpty. Operand 18653 states and 23265 transitions. [2020-10-29 07:46:16,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2020-10-29 07:46:16,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:16,743 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:46:16,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:46:16,743 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:16,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1992250499, now seen corresponding path program 1 times [2020-10-29 07:46:16,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:16,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065134826] [2020-10-29 07:46:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 609 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3887 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 493 [2020-10-29 07:46:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:46:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:20,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:20,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:20,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:20,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:46:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:20,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:46:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:21,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:46:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:21,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-29 07:46:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:46:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:46:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:21,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:46:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-29 07:46:21,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065134826] [2020-10-29 07:46:21,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:21,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:46:21,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924875734] [2020-10-29 07:46:21,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:21,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:21,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:21,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:21,774 INFO L87 Difference]: Start difference. First operand 18653 states and 23265 transitions. Second operand 8 states. [2020-10-29 07:46:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:38,712 INFO L93 Difference]: Finished difference Result 42597 states and 53630 transitions. [2020-10-29 07:46:38,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:46:38,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 591 [2020-10-29 07:46:38,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:38,802 INFO L225 Difference]: With dead ends: 42597 [2020-10-29 07:46:38,802 INFO L226 Difference]: Without dead ends: 24566 [2020-10-29 07:46:38,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:46:38,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24566 states. [2020-10-29 07:46:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24566 to 24255. [2020-10-29 07:46:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24255 states. [2020-10-29 07:46:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24255 states to 24255 states and 28813 transitions. [2020-10-29 07:46:39,424 INFO L78 Accepts]: Start accepts. Automaton has 24255 states and 28813 transitions. Word has length 591 [2020-10-29 07:46:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:39,425 INFO L481 AbstractCegarLoop]: Abstraction has 24255 states and 28813 transitions. [2020-10-29 07:46:39,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 24255 states and 28813 transitions. [2020-10-29 07:46:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2020-10-29 07:46:39,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:39,446 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:39,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:46:39,447 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash 493094952, now seen corresponding path program 1 times [2020-10-29 07:46:39,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:39,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123833125] [2020-10-29 07:46:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:40,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 649 [2020-10-29 07:46:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:46:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 07:46:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:44,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:44,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:44,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:45,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:45,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-29 07:46:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-29 07:46:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:45,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:46:45,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:45,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-29 07:46:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:45,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:46:45,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:45,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-10-29 07:46:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:45,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:45,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 277 proven. 164 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-29 07:46:46,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123833125] [2020-10-29 07:46:46,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:46,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:46,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772208726] [2020-10-29 07:46:46,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:46,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:46,193 INFO L87 Difference]: Start difference. First operand 24255 states and 28813 transitions. Second operand 7 states. [2020-10-29 07:47:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:00,930 INFO L93 Difference]: Finished difference Result 48228 states and 57505 transitions. [2020-10-29 07:47:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:47:00,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 631 [2020-10-29 07:47:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:01,014 INFO L225 Difference]: With dead ends: 48228 [2020-10-29 07:47:01,014 INFO L226 Difference]: Without dead ends: 24908 [2020-10-29 07:47:01,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:47:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24908 states. [2020-10-29 07:47:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24908 to 23658. [2020-10-29 07:47:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23658 states. [2020-10-29 07:47:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23658 states to 23658 states and 28181 transitions. [2020-10-29 07:47:01,745 INFO L78 Accepts]: Start accepts. Automaton has 23658 states and 28181 transitions. Word has length 631 [2020-10-29 07:47:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:01,746 INFO L481 AbstractCegarLoop]: Abstraction has 23658 states and 28181 transitions. [2020-10-29 07:47:01,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 23658 states and 28181 transitions. [2020-10-29 07:47:01,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-29 07:47:01,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:01,762 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:47:01,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:47:01,762 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1775923931, now seen corresponding path program 1 times [2020-10-29 07:47:01,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:01,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881940301] [2020-10-29 07:47:01,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking...