/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:51:15,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:51:15,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:51:15,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:51:15,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:51:15,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:51:15,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:51:15,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:51:15,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:51:15,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:51:15,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:51:15,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:51:15,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:51:15,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:51:15,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:51:15,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:51:15,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:51:15,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:51:15,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:51:15,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:51:15,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:51:15,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:51:15,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:51:15,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:51:15,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:51:15,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:51:15,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:51:15,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:51:15,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:51:15,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:51:15,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:51:15,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:51:15,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:51:15,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:51:15,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:51:15,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:51:15,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:51:15,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:51:15,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:51:15,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:51:15,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:51:15,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:51:15,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:51:15,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:51:15,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:51:15,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:51:15,200 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:51:15,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:51:15,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:51:15,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:51:15,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:51:15,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:51:15,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:51:15,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:51:15,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:51:15,202 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:51:15,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:51:15,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:51:15,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:51:15,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:51:15,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:51:15,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:51:15,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:51:15,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:51:15,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:51:15,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:51:15,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:51:15,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:51:15,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:51:15,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:51:15,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:51:15,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:51:15,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:51:15,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:51:15,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:51:15,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:51:15,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:51:15,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-26 23:51:15,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ec4a65b/a25799b7b47e4f239ca40309aa097ba2/FLAGcbd3e55eb [2020-10-26 23:51:16,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:51:16,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label05.c [2020-10-26 23:51:16,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ec4a65b/a25799b7b47e4f239ca40309aa097ba2/FLAGcbd3e55eb [2020-10-26 23:51:16,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90ec4a65b/a25799b7b47e4f239ca40309aa097ba2 [2020-10-26 23:51:16,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:51:16,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:51:16,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:51:16,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:51:16,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:51:16,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:51:16" (1/1) ... [2020-10-26 23:51:16,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:16, skipping insertion in model container [2020-10-26 23:51:16,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:51:16" (1/1) ... [2020-10-26 23:51:16,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:51:16,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:51:17,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:51:17,700 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:51:17,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:51:17,988 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:51:17,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17 WrapperNode [2020-10-26 23:51:17,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:51:17,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:51:17,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:51:17,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:51:18,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... [2020-10-26 23:51:18,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:51:18,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:51:18,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:51:18,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:51:18,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:51:18,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:51:18,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:51:18,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:51:18,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:51:18,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:51:18,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:51:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:51:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:51:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:51:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:51:18,290 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:51:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:51:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:51:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:51:18,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:51:18,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:51:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:51:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:51:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:51:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:51:18,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:51:21,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:51:21,317 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:51:21,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:21 BoogieIcfgContainer [2020-10-26 23:51:21,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:51:21,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:51:21,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:51:21,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:51:21,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:51:16" (1/3) ... [2020-10-26 23:51:21,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:21, skipping insertion in model container [2020-10-26 23:51:21,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:51:17" (2/3) ... [2020-10-26 23:51:21,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b3374ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:51:21, skipping insertion in model container [2020-10-26 23:51:21,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:51:21" (3/3) ... [2020-10-26 23:51:21,329 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label05.c [2020-10-26 23:51:21,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:51:21,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:51:21,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:51:21,394 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:51:21,394 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:51:21,395 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:51:21,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:51:21,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:51:21,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:51:21,412 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:51:21,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:51:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-26 23:51:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 23:51:21,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:21,457 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] [2020-10-26 23:51:21,458 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1612006268, now seen corresponding path program 1 times [2020-10-26 23:51:21,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:21,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531331199] [2020-10-26 23:51:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:21,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:22,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:22,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 23:51:22,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:22,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-26 23:51:22,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:22,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 23:51:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:51:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:22,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:22,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:22,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:51:22,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:22,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:22,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531331199] [2020-10-26 23:51:22,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:22,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:51:22,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081101018] [2020-10-26 23:51:22,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:51:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:22,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:51:22,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:51:22,475 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-26 23:51:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:27,772 INFO L93 Difference]: Finished difference Result 1174 states and 2171 transitions. [2020-10-26 23:51:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:51:27,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-26 23:51:27,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:27,799 INFO L225 Difference]: With dead ends: 1174 [2020-10-26 23:51:27,799 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:51:27,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:51:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:51:27,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 690. [2020-10-26 23:51:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-10-26 23:51:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1078 transitions. [2020-10-26 23:51:27,946 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1078 transitions. Word has length 26 [2020-10-26 23:51:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:27,947 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1078 transitions. [2020-10-26 23:51:27,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:51:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1078 transitions. [2020-10-26 23:51:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-26 23:51:27,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:27,957 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] [2020-10-26 23:51:27,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:51:27,957 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:27,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1937786658, now seen corresponding path program 1 times [2020-10-26 23:51:27,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:27,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641543284] [2020-10-26 23:51:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:29,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:51:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-10-26 23:51:29,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:29,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:29,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:51:29,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:51:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:29,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:29,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:51:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:29,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:29,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:29,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 23:51:29,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:51:29,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:29,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:29,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:51:29,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:29,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641543284] [2020-10-26 23:51:29,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:29,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:51:29,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814335366] [2020-10-26 23:51:29,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:29,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:29,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:29,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:29,601 INFO L87 Difference]: Start difference. First operand 690 states and 1078 transitions. Second operand 7 states. [2020-10-26 23:51:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:34,621 INFO L93 Difference]: Finished difference Result 1741 states and 2663 transitions. [2020-10-26 23:51:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:51:34,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-26 23:51:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:34,637 INFO L225 Difference]: With dead ends: 1741 [2020-10-26 23:51:34,637 INFO L226 Difference]: Without dead ends: 1057 [2020-10-26 23:51:34,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:34,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-26 23:51:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1040. [2020-10-26 23:51:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2020-10-26 23:51:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1424 transitions. [2020-10-26 23:51:34,694 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1424 transitions. Word has length 101 [2020-10-26 23:51:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:34,694 INFO L481 AbstractCegarLoop]: Abstraction has 1040 states and 1424 transitions. [2020-10-26 23:51:34,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1424 transitions. [2020-10-26 23:51:34,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 23:51:34,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:34,697 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] [2020-10-26 23:51:34,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:51:34,697 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash 30607196, now seen corresponding path program 1 times [2020-10-26 23:51:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:34,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640619836] [2020-10-26 23:51:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:34,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:35,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:35,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 23:51:35,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-26 23:51:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:51:35,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:51:35,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:51:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:35,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:35,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:35,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:51:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:51:35,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:51:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:51:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:51:36,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640619836] [2020-10-26 23:51:36,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:51:36,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:51:36,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076099253] [2020-10-26 23:51:36,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:36,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:36,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:36,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:36,029 INFO L87 Difference]: Start difference. First operand 1040 states and 1424 transitions. Second operand 7 states. [2020-10-26 23:51:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:41,689 INFO L93 Difference]: Finished difference Result 3166 states and 4411 transitions. [2020-10-26 23:51:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:41,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-26 23:51:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:41,711 INFO L225 Difference]: With dead ends: 3166 [2020-10-26 23:51:41,712 INFO L226 Difference]: Without dead ends: 2132 [2020-10-26 23:51:41,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-26 23:51:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2089. [2020-10-26 23:51:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2089 states. [2020-10-26 23:51:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2624 transitions. [2020-10-26 23:51:41,799 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2624 transitions. Word has length 102 [2020-10-26 23:51:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:41,800 INFO L481 AbstractCegarLoop]: Abstraction has 2089 states and 2624 transitions. [2020-10-26 23:51:41,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2624 transitions. [2020-10-26 23:51:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-26 23:51:41,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:41,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:41,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:51:41,807 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1627198314, now seen corresponding path program 1 times [2020-10-26 23:51:41,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:41,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745366463] [2020-10-26 23:51:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:41,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:43,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:44,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:44,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-26 23:51:44,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:44,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-26 23:51:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:51:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:51:44,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-26 23:51:44,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:44,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:44,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:44,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:44,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:44,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:51:44,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:44,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:44,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:51:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:44,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:44,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:44,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:51:44,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:51:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 23:51:44,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:44,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:51:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:51:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:45,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:45,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:45,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 23:51:45,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:51:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-26 23:51:45,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:51:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:51:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:51:45,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745366463] [2020-10-26 23:51:45,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:45,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:51:45,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023610651] [2020-10-26 23:51:45,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:51:45,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:51:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:45,832 INFO L87 Difference]: Start difference. First operand 2089 states and 2624 transitions. Second operand 12 states. [2020-10-26 23:51:46,077 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-26 23:51:46,647 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-26 23:51:46,912 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-26 23:51:47,603 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-26 23:51:49,582 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-26 23:51:50,591 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-26 23:51:50,805 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-26 23:51:51,033 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-26 23:51:51,626 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-26 23:51:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:57,485 INFO L93 Difference]: Finished difference Result 5420 states and 7033 transitions. [2020-10-26 23:51:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 23:51:57,486 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 189 [2020-10-26 23:51:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:57,506 INFO L225 Difference]: With dead ends: 5420 [2020-10-26 23:51:57,506 INFO L226 Difference]: Without dead ends: 3337 [2020-10-26 23:51:57,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 23:51:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2020-10-26 23:51:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2812. [2020-10-26 23:51:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2020-10-26 23:51:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3593 transitions. [2020-10-26 23:51:57,627 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3593 transitions. Word has length 189 [2020-10-26 23:51:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:57,627 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 3593 transitions. [2020-10-26 23:51:57,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:51:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3593 transitions. [2020-10-26 23:51:57,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-26 23:51:57,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:57,636 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:57,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:51:57,637 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash 807348936, now seen corresponding path program 1 times [2020-10-26 23:51:57,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:57,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106520911] [2020-10-26 23:51:57,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-26 23:52:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:52:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:52:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:52:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:52:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:52:02,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:03,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:03,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:03,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:52:03,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:03,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:52:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:52:03,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 23:52:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:03,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:03,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:03,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:03,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:52:03,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:03,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:52:03,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:03,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:03,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-26 23:52:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:03,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:03,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:03,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:52:03,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:03,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 54 proven. 190 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-10-26 23:52:03,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106520911] [2020-10-26 23:52:03,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:03,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:03,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007160227] [2020-10-26 23:52:03,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:03,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:03,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:03,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:03,546 INFO L87 Difference]: Start difference. First operand 2812 states and 3593 transitions. Second operand 7 states. [2020-10-26 23:52:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:08,991 INFO L93 Difference]: Finished difference Result 6363 states and 8065 transitions. [2020-10-26 23:52:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:08,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-26 23:52:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:09,012 INFO L225 Difference]: With dead ends: 6363 [2020-10-26 23:52:09,012 INFO L226 Difference]: Without dead ends: 3557 [2020-10-26 23:52:09,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2020-10-26 23:52:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3501. [2020-10-26 23:52:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2020-10-26 23:52:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4349 transitions. [2020-10-26 23:52:09,126 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4349 transitions. Word has length 370 [2020-10-26 23:52:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:09,127 INFO L481 AbstractCegarLoop]: Abstraction has 3501 states and 4349 transitions. [2020-10-26 23:52:09,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4349 transitions. [2020-10-26 23:52:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-26 23:52:09,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:09,139 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, 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] [2020-10-26 23:52:09,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:52:09,139 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:09,140 INFO L82 PathProgramCache]: Analyzing trace with hash -343072178, now seen corresponding path program 1 times [2020-10-26 23:52:09,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:09,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894216161] [2020-10-26 23:52:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:09,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:09,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:09,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:09,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:11,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:14,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-26 23:52:14,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:52:14,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:52:14,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-26 23:52:14,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-26 23:52:14,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:14,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:14,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:14,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:14,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:14,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:14,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-26 23:52:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:52:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:14,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-26 23:52:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:14,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:14,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:14,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 23:52:14,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:52:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:14,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-26 23:52:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:14,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:14,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:14,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:52:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-26 23:52:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:15,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:15,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:15,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:15,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:15,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:52:15,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:15,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 168 proven. 196 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2020-10-26 23:52:15,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894216161] [2020-10-26 23:52:15,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:15,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:15,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968086982] [2020-10-26 23:52:15,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:15,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:15,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:15,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:15,287 INFO L87 Difference]: Start difference. First operand 3501 states and 4349 transitions. Second operand 7 states. [2020-10-26 23:52:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:21,232 INFO L93 Difference]: Finished difference Result 6710 states and 8421 transitions. [2020-10-26 23:52:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:21,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 461 [2020-10-26 23:52:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:21,249 INFO L225 Difference]: With dead ends: 6710 [2020-10-26 23:52:21,250 INFO L226 Difference]: Without dead ends: 3491 [2020-10-26 23:52:21,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2020-10-26 23:52:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3470. [2020-10-26 23:52:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3470 states. [2020-10-26 23:52:21,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 3723 transitions. [2020-10-26 23:52:21,346 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 3723 transitions. Word has length 461 [2020-10-26 23:52:21,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:21,346 INFO L481 AbstractCegarLoop]: Abstraction has 3470 states and 3723 transitions. [2020-10-26 23:52:21,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:21,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 3723 transitions. [2020-10-26 23:52:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-26 23:52:21,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:21,359 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, 3, 3, 3, 3, 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] [2020-10-26 23:52:21,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:52:21,360 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:21,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash 205566710, now seen corresponding path program 1 times [2020-10-26 23:52:21,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:21,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540977684] [2020-10-26 23:52:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:26,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:26,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:52:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:26,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:26,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:26,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:52:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:52:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:52:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:52:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:27,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-26 23:52:27,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-26 23:52:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:27,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:27,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 184 proven. 114 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-26 23:52:27,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540977684] [2020-10-26 23:52:27,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:27,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:27,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230940525] [2020-10-26 23:52:27,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:27,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:27,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:27,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:27,869 INFO L87 Difference]: Start difference. First operand 3470 states and 3723 transitions. Second operand 7 states. [2020-10-26 23:52:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:32,297 INFO L93 Difference]: Finished difference Result 8000 states and 8730 transitions. [2020-10-26 23:52:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:52:32,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 509 [2020-10-26 23:52:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:32,318 INFO L225 Difference]: With dead ends: 8000 [2020-10-26 23:52:32,319 INFO L226 Difference]: Without dead ends: 4873 [2020-10-26 23:52:32,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:52:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2020-10-26 23:52:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4511. [2020-10-26 23:52:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4511 states. [2020-10-26 23:52:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 4824 transitions. [2020-10-26 23:52:32,441 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 4824 transitions. Word has length 509 [2020-10-26 23:52:32,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:32,442 INFO L481 AbstractCegarLoop]: Abstraction has 4511 states and 4824 transitions. [2020-10-26 23:52:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 4824 transitions. [2020-10-26 23:52:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2020-10-26 23:52:32,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:32,451 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, 3, 3, 3, 3, 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] [2020-10-26 23:52:32,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:52:32,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash -848478314, now seen corresponding path program 1 times [2020-10-26 23:52:32,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:32,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803667937] [2020-10-26 23:52:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:33,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:33,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:37,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:37,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 635 [2020-10-26 23:52:37,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:52:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-26 23:52:37,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:52:37,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:52:37,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:37,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:37,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:37,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:52:37,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:37,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:37,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:37,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:37,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:37,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 23:52:37,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:37,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:52:38,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:52:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:52:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:52:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 23:52:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:52:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-26 23:52:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:52:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 308 proven. 114 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-26 23:52:38,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803667937] [2020-10-26 23:52:38,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:38,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:52:38,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340685804] [2020-10-26 23:52:38,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:52:38,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:38,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:52:38,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:52:38,876 INFO L87 Difference]: Start difference. First operand 4511 states and 4824 transitions. Second operand 7 states. [2020-10-26 23:52:43,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:43,562 INFO L93 Difference]: Finished difference Result 10060 states and 10917 transitions. [2020-10-26 23:52:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:52:43,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 617 [2020-10-26 23:52:43,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:43,588 INFO L225 Difference]: With dead ends: 10060 [2020-10-26 23:52:43,588 INFO L226 Difference]: Without dead ends: 5894 [2020-10-26 23:52:43,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5894 states. [2020-10-26 23:52:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5894 to 5876. [2020-10-26 23:52:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5876 states. [2020-10-26 23:52:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 6236 transitions. [2020-10-26 23:52:43,740 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 6236 transitions. Word has length 617 [2020-10-26 23:52:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 5876 states and 6236 transitions. [2020-10-26 23:52:43,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 6236 transitions. [2020-10-26 23:52:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2020-10-26 23:52:43,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:43,754 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:52:43,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:52:43,754 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:43,755 INFO L82 PathProgramCache]: Analyzing trace with hash -176536374, now seen corresponding path program 1 times [2020-10-26 23:52:43,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:43,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432488325] [2020-10-26 23:52:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:44,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:44,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:48,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 753 [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:52:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:52:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-26 23:52:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:49,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:49,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:49,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:49,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:52:49,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:49,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:52:49,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:49,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:52:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:52:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 23:52:50,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-26 23:52:50,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:50,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:52:50,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-26 23:52:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:52:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:52:50,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:52:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:50,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-26 23:52:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:52:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 321 proven. 408 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 23:52:52,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432488325] [2020-10-26 23:52:52,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:52,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:52:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415408708] [2020-10-26 23:52:52,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:52:52,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:52,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:52:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:52:52,605 INFO L87 Difference]: Start difference. First operand 5876 states and 6236 transitions. Second operand 8 states. [2020-10-26 23:52:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:56,771 INFO L93 Difference]: Finished difference Result 11768 states and 12498 transitions. [2020-10-26 23:52:56,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:52:56,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 735 [2020-10-26 23:52:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:56,801 INFO L225 Difference]: With dead ends: 11768 [2020-10-26 23:52:56,802 INFO L226 Difference]: Without dead ends: 6237 [2020-10-26 23:52:56,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:52:56,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-26 23:52:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6217. [2020-10-26 23:52:56,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6217 states. [2020-10-26 23:52:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 6583 transitions. [2020-10-26 23:52:56,990 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 6583 transitions. Word has length 735 [2020-10-26 23:52:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:56,992 INFO L481 AbstractCegarLoop]: Abstraction has 6217 states and 6583 transitions. [2020-10-26 23:52:56,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:52:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 6583 transitions. [2020-10-26 23:52:57,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2020-10-26 23:52:57,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:57,008 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:57,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:52:57,009 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:57,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:57,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1380134878, now seen corresponding path program 1 times [2020-10-26 23:52:57,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:57,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652098873] [2020-10-26 23:52:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 789 [2020-10-26 23:53:02,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:02,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 23:53:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-26 23:53:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:53:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:02,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:02,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:02,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:53:02,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:02,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-26 23:53:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:53:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:03,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-26 23:53:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:03,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:03,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-26 23:53:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:03,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:03,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:03,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:53:03,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-26 23:53:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:03,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:03,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:03,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:53:03,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:03,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:03,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1203 backedges. 261 proven. 335 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2020-10-26 23:53:04,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652098873] [2020-10-26 23:53:04,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:04,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:04,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626363888] [2020-10-26 23:53:04,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:04,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:04,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:04,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:04,122 INFO L87 Difference]: Start difference. First operand 6217 states and 6583 transitions. Second operand 7 states. [2020-10-26 23:53:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:08,246 INFO L93 Difference]: Finished difference Result 13826 states and 14699 transitions. [2020-10-26 23:53:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:53:08,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 769 [2020-10-26 23:53:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:08,271 INFO L225 Difference]: With dead ends: 13826 [2020-10-26 23:53:08,272 INFO L226 Difference]: Without dead ends: 7954 [2020-10-26 23:53:08,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2020-10-26 23:53:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 7932. [2020-10-26 23:53:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7932 states. [2020-10-26 23:53:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7932 states to 7932 states and 8362 transitions. [2020-10-26 23:53:08,453 INFO L78 Accepts]: Start accepts. Automaton has 7932 states and 8362 transitions. Word has length 769 [2020-10-26 23:53:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:08,455 INFO L481 AbstractCegarLoop]: Abstraction has 7932 states and 8362 transitions. [2020-10-26 23:53:08,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7932 states and 8362 transitions. [2020-10-26 23:53:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-26 23:53:08,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:08,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:08,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:53:08,469 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:08,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:08,470 INFO L82 PathProgramCache]: Analyzing trace with hash 116979436, now seen corresponding path program 1 times [2020-10-26 23:53:08,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:08,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121981773] [2020-10-26 23:53:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:08,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-26 23:53:13,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:13,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:13,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:13,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:13,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:13,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:13,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:13,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:53:13,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:13,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:13,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-26 23:53:14,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:53:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:14,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:14,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-26 23:53:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:53:14,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:53:14,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:53:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:14,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-26 23:53:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:14,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 363 proven. 194 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2020-10-26 23:53:15,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121981773] [2020-10-26 23:53:15,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:15,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:15,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144436310] [2020-10-26 23:53:15,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:15,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:15,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:15,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:15,392 INFO L87 Difference]: Start difference. First operand 7932 states and 8362 transitions. Second operand 7 states. [2020-10-26 23:53:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:20,010 INFO L93 Difference]: Finished difference Result 15888 states and 16791 transitions. [2020-10-26 23:53:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:53:20,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-26 23:53:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:20,037 INFO L225 Difference]: With dead ends: 15888 [2020-10-26 23:53:20,037 INFO L226 Difference]: Without dead ends: 8301 [2020-10-26 23:53:20,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2020-10-26 23:53:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 8275. [2020-10-26 23:53:20,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8275 states. [2020-10-26 23:53:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8275 states to 8275 states and 8716 transitions. [2020-10-26 23:53:20,238 INFO L78 Accepts]: Start accepts. Automaton has 8275 states and 8716 transitions. Word has length 830 [2020-10-26 23:53:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:20,242 INFO L481 AbstractCegarLoop]: Abstraction has 8275 states and 8716 transitions. [2020-10-26 23:53:20,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8275 states and 8716 transitions. [2020-10-26 23:53:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2020-10-26 23:53:20,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:20,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:53:20,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:53:20,262 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash -908659672, now seen corresponding path program 1 times [2020-10-26 23:53:20,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:20,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764499055] [2020-10-26 23:53:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:20,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 852 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-26 23:53:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:25,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:25,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:25,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:53:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:53:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:26,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-26 23:53:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:53:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-26 23:53:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:26,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:53:26,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:26,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:26,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-26 23:53:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:26,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:26,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:26,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 363 proven. 194 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-26 23:53:26,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764499055] [2020-10-26 23:53:26,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:26,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:26,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480131871] [2020-10-26 23:53:26,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:26,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:26,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:26,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:26,994 INFO L87 Difference]: Start difference. First operand 8275 states and 8716 transitions. Second operand 7 states. [2020-10-26 23:53:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:32,067 INFO L93 Difference]: Finished difference Result 17573 states and 18708 transitions. [2020-10-26 23:53:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:53:32,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 832 [2020-10-26 23:53:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:32,113 INFO L225 Difference]: With dead ends: 17573 [2020-10-26 23:53:32,113 INFO L226 Difference]: Without dead ends: 9643 [2020-10-26 23:53:32,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:53:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2020-10-26 23:53:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 9637. [2020-10-26 23:53:32,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9637 states. [2020-10-26 23:53:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 10116 transitions. [2020-10-26 23:53:32,352 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 10116 transitions. Word has length 832 [2020-10-26 23:53:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:32,353 INFO L481 AbstractCegarLoop]: Abstraction has 9637 states and 10116 transitions. [2020-10-26 23:53:32,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 10116 transitions. [2020-10-26 23:53:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2020-10-26 23:53:32,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:32,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:32,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:53:32,372 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash 688596410, now seen corresponding path program 1 times [2020-10-26 23:53:32,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:32,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215513667] [2020-10-26 23:53:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:32,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 891 [2020-10-26 23:53:37,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:53:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 23:53:37,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-26 23:53:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-26 23:53:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:37,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:37,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:53:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:53:37,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 23:53:37,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:53:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-26 23:53:38,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-26 23:53:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:53:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-26 23:53:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:38,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1402 backedges. 424 proven. 275 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-26 23:53:39,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215513667] [2020-10-26 23:53:39,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:39,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:53:39,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362556282] [2020-10-26 23:53:39,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:53:39,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:53:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:53:39,114 INFO L87 Difference]: Start difference. First operand 9637 states and 10116 transitions. Second operand 7 states. [2020-10-26 23:53:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:43,751 INFO L93 Difference]: Finished difference Result 25719 states and 27228 transitions. [2020-10-26 23:53:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:43,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 871 [2020-10-26 23:53:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:43,808 INFO L225 Difference]: With dead ends: 25719 [2020-10-26 23:53:43,809 INFO L226 Difference]: Without dead ends: 16427 [2020-10-26 23:53:43,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:53:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2020-10-26 23:53:44,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 15408. [2020-10-26 23:53:44,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15408 states. [2020-10-26 23:53:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15408 states to 15408 states and 16309 transitions. [2020-10-26 23:53:44,199 INFO L78 Accepts]: Start accepts. Automaton has 15408 states and 16309 transitions. Word has length 871 [2020-10-26 23:53:44,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:44,200 INFO L481 AbstractCegarLoop]: Abstraction has 15408 states and 16309 transitions. [2020-10-26 23:53:44,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:53:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15408 states and 16309 transitions. [2020-10-26 23:53:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-26 23:53:44,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:44,231 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:53:44,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:53:44,231 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:44,232 INFO L82 PathProgramCache]: Analyzing trace with hash 619383964, now seen corresponding path program 1 times [2020-10-26 23:53:44,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:44,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114512583] [2020-10-26 23:53:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:53:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:44,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-26 23:53:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-26 23:53:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:49,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:53:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:49,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:49,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:53:49,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:49,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:53:49,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:49,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:53:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:53:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:53:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:53:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:53:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:53:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:53:50,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:53:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:53:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:53:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:53:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:53:50,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-26 23:53:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:53:50,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:53:50,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-26 23:53:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:53:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1816 backedges. 821 proven. 2 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2020-10-26 23:53:51,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114512583] [2020-10-26 23:53:51,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:53:51,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:53:51,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022020944] [2020-10-26 23:53:51,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:53:51,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:53:51,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:53:51,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:53:51,781 INFO L87 Difference]: Start difference. First operand 15408 states and 16309 transitions. Second operand 8 states. [2020-10-26 23:53:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:53:59,489 INFO L93 Difference]: Finished difference Result 33858 states and 36027 transitions. [2020-10-26 23:53:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:53:59,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 996 [2020-10-26 23:53:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:53:59,542 INFO L225 Difference]: With dead ends: 33858 [2020-10-26 23:53:59,542 INFO L226 Difference]: Without dead ends: 18795 [2020-10-26 23:53:59,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:53:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18795 states. [2020-10-26 23:53:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18795 to 18119. [2020-10-26 23:53:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18119 states. [2020-10-26 23:53:59,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18119 states to 18119 states and 19086 transitions. [2020-10-26 23:53:59,901 INFO L78 Accepts]: Start accepts. Automaton has 18119 states and 19086 transitions. Word has length 996 [2020-10-26 23:53:59,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:53:59,903 INFO L481 AbstractCegarLoop]: Abstraction has 18119 states and 19086 transitions. [2020-10-26 23:53:59,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:53:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 18119 states and 19086 transitions. [2020-10-26 23:53:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2020-10-26 23:53:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:53:59,936 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:53:59,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:53:59,937 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:53:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:53:59,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1206369790, now seen corresponding path program 1 times [2020-10-26 23:53:59,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:53:59,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706144069] [2020-10-26 23:53:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1089 [2020-10-26 23:54:01,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-26 23:54:01,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1061 [2020-10-26 23:54:01,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-26 23:54:01,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:01,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:01,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-26 23:54:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:54:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-26 23:54:02,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:54:02,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-26 23:54:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-26 23:54:02,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:02,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-26 23:54:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-26 23:54:02,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:54:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-26 23:54:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 97 proven. 5 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2020-10-26 23:54:03,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706144069] [2020-10-26 23:54:03,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:54:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681536149] [2020-10-26 23:54:03,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:54:03,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:54:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:54:03,031 INFO L87 Difference]: Start difference. First operand 18119 states and 19086 transitions. Second operand 5 states. [2020-10-26 23:54:07,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:07,099 INFO L93 Difference]: Finished difference Result 40278 states and 42538 transitions. [2020-10-26 23:54:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:54:07,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1069 [2020-10-26 23:54:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:07,156 INFO L225 Difference]: With dead ends: 40278 [2020-10-26 23:54:07,156 INFO L226 Difference]: Without dead ends: 22504 [2020-10-26 23:54:07,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:54:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22504 states. [2020-10-26 23:54:07,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22504 to 19806. [2020-10-26 23:54:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19806 states. [2020-10-26 23:54:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19806 states to 19806 states and 20915 transitions. [2020-10-26 23:54:07,587 INFO L78 Accepts]: Start accepts. Automaton has 19806 states and 20915 transitions. Word has length 1069 [2020-10-26 23:54:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:07,589 INFO L481 AbstractCegarLoop]: Abstraction has 19806 states and 20915 transitions. [2020-10-26 23:54:07,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:54:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 19806 states and 20915 transitions. [2020-10-26 23:54:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2020-10-26 23:54:07,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:07,635 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:54:07,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:54:07,635 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:07,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1513932810, now seen corresponding path program 1 times [2020-10-26 23:54:07,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:07,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12222836] [2020-10-26 23:54:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:08,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1419 [2020-10-26 23:54:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:54:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 23:54:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:54:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-26 23:54:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:13,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:54:13,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:13,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:13,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:54:13,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:13,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:54:13,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:54:13,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:54:13,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:13,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:54:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:13,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:13,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:13,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:54:13,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:13,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:13,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:54:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:13,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:54:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 23:54:14,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:54:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:54:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:14,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:14,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:14,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-26 23:54:14,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-26 23:54:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:15,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:54:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:15,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1226 [2020-10-26 23:54:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:15,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:54:15,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:54:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:15,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-26 23:54:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3880 backedges. 1022 proven. 257 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2020-10-26 23:54:16,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12222836] [2020-10-26 23:54:16,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:16,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:16,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355439222] [2020-10-26 23:54:16,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:16,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:16,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:16,958 INFO L87 Difference]: Start difference. First operand 19806 states and 20915 transitions. Second operand 7 states. [2020-10-26 23:54:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:54:23,991 INFO L93 Difference]: Finished difference Result 39279 states and 41508 transitions. [2020-10-26 23:54:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:54:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1393 [2020-10-26 23:54:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:54:24,041 INFO L225 Difference]: With dead ends: 39279 [2020-10-26 23:54:24,041 INFO L226 Difference]: Without dead ends: 19818 [2020-10-26 23:54:24,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:54:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19818 states. [2020-10-26 23:54:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19818 to 19806. [2020-10-26 23:54:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19806 states. [2020-10-26 23:54:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19806 states to 19806 states and 20907 transitions. [2020-10-26 23:54:24,427 INFO L78 Accepts]: Start accepts. Automaton has 19806 states and 20907 transitions. Word has length 1393 [2020-10-26 23:54:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:54:24,428 INFO L481 AbstractCegarLoop]: Abstraction has 19806 states and 20907 transitions. [2020-10-26 23:54:24,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:54:24,428 INFO L276 IsEmpty]: Start isEmpty. Operand 19806 states and 20907 transitions. [2020-10-26 23:54:24,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1439 [2020-10-26 23:54:24,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:54:24,471 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:54:24,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:54:24,471 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:54:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:54:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1120544236, now seen corresponding path program 1 times [2020-10-26 23:54:24,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:54:24,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988842191] [2020-10-26 23:54:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:54:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:29,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:29,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1466 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5220 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:54:29,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:54:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:54:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:54:30,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:54:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 23:54:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:54:30,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-26 23:54:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:54:30,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:54:30,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-26 23:54:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-26 23:54:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-26 23:54:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:54:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:54:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:54:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-26 23:54:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-26 23:54:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:54:30,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:54:30,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:54:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:30,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-26 23:54:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-26 23:54:30,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:30,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:31,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-26 23:54:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-26 23:54:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:31,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-26 23:54:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:54:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:54:31,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-26 23:54:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:54:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:54:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4631 backedges. 642 proven. 242 refuted. 0 times theorem prover too weak. 3747 trivial. 0 not checked. [2020-10-26 23:54:32,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988842191] [2020-10-26 23:54:32,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:54:32,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:54:32,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806504571] [2020-10-26 23:54:32,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:54:32,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:54:32,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:54:32,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:54:32,377 INFO L87 Difference]: Start difference. First operand 19806 states and 20907 transitions. Second operand 7 states.