/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/verifythis/tree_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:46:19,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:46:19,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:46:19,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:46:19,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:46:19,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:46:19,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:46:19,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:46:19,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:46:19,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:46:19,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:46:19,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:46:19,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:46:19,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:46:19,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:46:19,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:46:19,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:46:19,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:46:19,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:46:19,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:46:19,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:46:19,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:46:19,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:46:19,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:46:19,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:46:19,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:46:19,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:46:19,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:46:19,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:46:19,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:46:19,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:46:19,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:46:19,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:46:19,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:46:19,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:46:19,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:46:19,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:46:19,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:46:19,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:46:19,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:46:19,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:46:19,183 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 [2020-10-27 06:46:19,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:46:19,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:46:19,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:46:19,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:46:19,227 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:46:19,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:46:19,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:46:19,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:46:19,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:46:19,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:46:19,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:46:19,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:46:19,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:46:19,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:46:19,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:46:19,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:46:19,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:46:19,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:46:19,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:46:19,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:46:19,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:46:19,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:46:19,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:46:19,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:46:19,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:46:19,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:46:19,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:46:19,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:46:19,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:46:19,684 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:46:19,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_max.c [2020-10-27 06:46:19,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5a25b6a/a5cbdef2e9f543f893cc36454d26bddd/FLAGfcc1e2bba [2020-10-27 06:46:20,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:46:20,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_max.c [2020-10-27 06:46:20,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5a25b6a/a5cbdef2e9f543f893cc36454d26bddd/FLAGfcc1e2bba [2020-10-27 06:46:20,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c5a25b6a/a5cbdef2e9f543f893cc36454d26bddd [2020-10-27 06:46:20,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:46:20,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:46:20,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:46:20,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:46:20,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:46:20,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:46:20" (1/1) ... [2020-10-27 06:46:20,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b9e684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:20, skipping insertion in model container [2020-10-27 06:46:20,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:46:20" (1/1) ... [2020-10-27 06:46:20,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:46:20,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:46:21,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:46:21,081 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:46:21,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:46:21,152 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:46:21,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21 WrapperNode [2020-10-27 06:46:21,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:46:21,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:46:21,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:46:21,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:46:21,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (1/1) ... [2020-10-27 06:46:21,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:46:21,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:46:21,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:46:21,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:46:21,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (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 [2020-10-27 06:46:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:46:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:46:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:46:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:46:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 06:46:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-27 06:46:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-27 06:46:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 06:46:21,280 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-27 06:46:21,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:46:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 06:46:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 06:46:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:46:21,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:46:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:46:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:46:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:46:21,282 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:46:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:46:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 06:46:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-27 06:46:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 06:46:21,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:46:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 06:46:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-27 06:46:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:46:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 06:46:21,284 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:46:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-27 06:46:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:46:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:46:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:46:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:46:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:46:21,763 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:46:21,763 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:46:21,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:46:21 BoogieIcfgContainer [2020-10-27 06:46:21,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:46:21,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:46:21,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:46:21,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:46:21,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:46:20" (1/3) ... [2020-10-27 06:46:21,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a0ad72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:46:21, skipping insertion in model container [2020-10-27 06:46:21,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:46:21" (2/3) ... [2020-10-27 06:46:21,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a0ad72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:46:21, skipping insertion in model container [2020-10-27 06:46:21,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:46:21" (3/3) ... [2020-10-27 06:46:21,780 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max.c [2020-10-27 06:46:21,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:46:21,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:46:21,816 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:46:21,866 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:46:21,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:46:21,866 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:46:21,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:46:21,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:46:21,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:46:21,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:46:21,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:46:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-27 06:46:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 06:46:21,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:21,906 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] [2020-10-27 06:46:21,906 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:21,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:21,917 INFO L82 PathProgramCache]: Analyzing trace with hash 900711335, now seen corresponding path program 1 times [2020-10-27 06:46:21,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:21,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581797003] [2020-10-27 06:46:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:22,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:23,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:23,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:46:23,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:23,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1223 [2020-10-27 06:46:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:46:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:46:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:46:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 06:46:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:23,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:23,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:23,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:46:23,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 06:46:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:46:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:46:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 06:46:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:23,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:23,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:23,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:46:23,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:23,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:23,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:46:23,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581797003] [2020-10-27 06:46:23,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:46:23,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 06:46:23,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336197490] [2020-10-27 06:46:23,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 06:46:23,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:23,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 06:46:23,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:46:23,790 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 10 states. [2020-10-27 06:46:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:24,743 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2020-10-27 06:46:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:46:24,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-27 06:46:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:24,758 INFO L225 Difference]: With dead ends: 99 [2020-10-27 06:46:24,758 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 06:46:24,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-27 06:46:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 06:46:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-27 06:46:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 06:46:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2020-10-27 06:46:24,818 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 25 [2020-10-27 06:46:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:24,819 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2020-10-27 06:46:24,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 06:46:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2020-10-27 06:46:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-27 06:46:24,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:24,823 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:46:24,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:46:24,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:24,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1619052022, now seen corresponding path program 1 times [2020-10-27 06:46:24,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:24,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142585155] [2020-10-27 06:46:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:24,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:24,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:46:25,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:46:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 06:46:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:25,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:25,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:25,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 06:46:25,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:25,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:46:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:46:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:25,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:46:25,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:25,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:25,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:25,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:25,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:25,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:46:25,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:46:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:25,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:25,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:25,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:25,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:46:25,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:25,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:46:25,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142585155] [2020-10-27 06:46:25,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:46:25,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 06:46:25,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360216460] [2020-10-27 06:46:25,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 06:46:25,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:25,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 06:46:25,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:46:25,974 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 11 states. [2020-10-27 06:46:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:26,663 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-10-27 06:46:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:46:26,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-27 06:46:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:26,669 INFO L225 Difference]: With dead ends: 62 [2020-10-27 06:46:26,669 INFO L226 Difference]: Without dead ends: 46 [2020-10-27 06:46:26,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-27 06:46:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-27 06:46:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-27 06:46:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 06:46:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-27 06:46:26,685 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 35 [2020-10-27 06:46:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:26,686 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-27 06:46:26,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 06:46:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-27 06:46:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:46:26,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:26,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:46:26,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:46:26,689 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:26,691 INFO L82 PathProgramCache]: Analyzing trace with hash -368774840, now seen corresponding path program 1 times [2020-10-27 06:46:26,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:26,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343966545] [2020-10-27 06:46:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 06:46:27,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:27,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-27 06:46:27,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:46:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 06:46:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 06:46:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 06:46:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:27,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:46:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:27,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:27,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:27,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:27,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:27,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:27,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:27,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:46:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:46:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:46:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:46:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:28,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:28,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:46:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:28,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:28,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:28,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:46:28,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343966545] [2020-10-27 06:46:28,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:28,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 06:46:28,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011307788] [2020-10-27 06:46:28,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 06:46:28,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:28,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 06:46:28,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-27 06:46:28,085 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 14 states. [2020-10-27 06:46:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:29,373 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-27 06:46:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 06:46:29,375 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-10-27 06:46:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:29,377 INFO L225 Difference]: With dead ends: 60 [2020-10-27 06:46:29,377 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 06:46:29,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-10-27 06:46:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 06:46:29,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-10-27 06:46:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 06:46:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-27 06:46:29,393 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 48 [2020-10-27 06:46:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:29,393 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-27 06:46:29,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 06:46:29,394 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-27 06:46:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 06:46:29,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:29,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:46:29,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:46:29,397 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:29,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1341426619, now seen corresponding path program 1 times [2020-10-27 06:46:29,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:29,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425408373] [2020-10-27 06:46:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 06:46:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4188 [2020-10-27 06:46:33,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 06:46:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 06:46:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:46:33,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:33,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:33,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:46:33,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:33,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:33,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:34,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 06:46:34,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:46:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:46:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:34,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:46:34,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:46:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:46:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:34,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:46:34,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:46:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:46:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:46:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 06:46:34,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:46:34,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:46:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:46:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:46:34,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 06:46:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:34,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:34,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:34,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:34,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:34,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:46:34,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425408373] [2020-10-27 06:46:34,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:34,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 06:46:34,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118527352] [2020-10-27 06:46:34,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 06:46:34,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:34,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 06:46:34,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-27 06:46:34,454 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 17 states. [2020-10-27 06:46:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:36,151 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2020-10-27 06:46:36,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 06:46:36,156 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-27 06:46:36,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:36,159 INFO L225 Difference]: With dead ends: 86 [2020-10-27 06:46:36,159 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 06:46:36,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2020-10-27 06:46:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 06:46:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-10-27 06:46:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 06:46:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2020-10-27 06:46:36,196 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 58 [2020-10-27 06:46:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:36,199 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2020-10-27 06:46:36,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 06:46:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2020-10-27 06:46:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 06:46:36,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:36,206 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:46:36,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:46:36,208 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1892196733, now seen corresponding path program 1 times [2020-10-27 06:46:36,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:36,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318365693] [2020-10-27 06:46:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2855 [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:46:39,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 06:46:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 06:46:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:39,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:46:39,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:39,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:46:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:39,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:46:39,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:46:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:46:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:46:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:46:39,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:39,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 06:46:39,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:39,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:46:39,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:46:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:39,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:46:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:39,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 06:46:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:39,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:39,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 06:46:39,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318365693] [2020-10-27 06:46:39,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:39,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:46:39,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173375419] [2020-10-27 06:46:39,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:46:39,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:46:39,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:46:39,780 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 15 states. [2020-10-27 06:46:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:41,192 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2020-10-27 06:46:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 06:46:41,193 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-10-27 06:46:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:41,200 INFO L225 Difference]: With dead ends: 99 [2020-10-27 06:46:41,200 INFO L226 Difference]: Without dead ends: 72 [2020-10-27 06:46:41,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-10-27 06:46:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-27 06:46:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-27 06:46:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 06:46:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2020-10-27 06:46:41,242 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 58 [2020-10-27 06:46:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:41,243 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2020-10-27 06:46:41,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 06:46:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2020-10-27 06:46:41,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:46:41,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:41,247 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 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] [2020-10-27 06:46:41,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:46:41,248 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:41,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:41,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1507539448, now seen corresponding path program 2 times [2020-10-27 06:46:41,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:41,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904799916] [2020-10-27 06:46:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3903 [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:46:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 06:46:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:46:45,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:45,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:45,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:46:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:46:45,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:45,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:46:45,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:45,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:46:45,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:46:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:46:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:45,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:46:45,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:46:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:46:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:46:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:46:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:46:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:46:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:46:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:46:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:45,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:45,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:45,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:45,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:46:45,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 06:46:45,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904799916] [2020-10-27 06:46:45,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 06:46:45,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654687701] [2020-10-27 06:46:45,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 06:46:45,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 06:46:45,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-27 06:46:45,938 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand 18 states. [2020-10-27 06:46:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:47,418 INFO L93 Difference]: Finished difference Result 103 states and 132 transitions. [2020-10-27 06:46:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 06:46:47,420 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-27 06:46:47,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:47,425 INFO L225 Difference]: With dead ends: 103 [2020-10-27 06:46:47,425 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 06:46:47,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-10-27 06:46:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 06:46:47,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 06:46:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 06:46:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 105 transitions. [2020-10-27 06:46:47,444 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 105 transitions. Word has length 68 [2020-10-27 06:46:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:47,445 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 105 transitions. [2020-10-27 06:46:47,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 06:46:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 105 transitions. [2020-10-27 06:46:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:46:47,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:47,447 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 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] [2020-10-27 06:46:47,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:46:47,447 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:47,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:47,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1570562530, now seen corresponding path program 3 times [2020-10-27 06:46:47,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:47,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538036023] [2020-10-27 06:46:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:47,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:47,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 06:46:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:46:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:52,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:52,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:52,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:52,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:46:52,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:52,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:52,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:46:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:53,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:53,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:46:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:53,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:53,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:53,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:53,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:46:53,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:46:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:53,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:46:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:46:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 06:46:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:46:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:46:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:46:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:46:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:46:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:46:54,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:46:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:46:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:54,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:46:54,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:46:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:46:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:54,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:46:54,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:46:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:46:54,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:46:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:54,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:46:54,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:46:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:46:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:46:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 06:46:54,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538036023] [2020-10-27 06:46:54,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:46:54,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 06:46:54,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808060155] [2020-10-27 06:46:54,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 06:46:54,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:46:54,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 06:46:54,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-27 06:46:54,650 INFO L87 Difference]: Start difference. First operand 78 states and 105 transitions. Second operand 21 states. [2020-10-27 06:46:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:46:56,941 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2020-10-27 06:46:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 06:46:56,941 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 68 [2020-10-27 06:46:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:46:56,944 INFO L225 Difference]: With dead ends: 109 [2020-10-27 06:46:56,944 INFO L226 Difference]: Without dead ends: 92 [2020-10-27 06:46:56,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 06:46:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-27 06:46:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-27 06:46:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 06:46:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 124 transitions. [2020-10-27 06:46:56,967 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 124 transitions. Word has length 68 [2020-10-27 06:46:56,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:46:56,967 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 124 transitions. [2020-10-27 06:46:56,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 06:46:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 124 transitions. [2020-10-27 06:46:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 06:46:56,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:46:56,970 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:46:56,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:46:56,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:46:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:46:56,971 INFO L82 PathProgramCache]: Analyzing trace with hash 324943515, now seen corresponding path program 4 times [2020-10-27 06:46:56,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:46:56,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953360467] [2020-10-27 06:46:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:46:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:46:57,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:57,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:46:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:02,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 06:47:02,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:47:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 06:47:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 06:47:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:47:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 06:47:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:02,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:02,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:02,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:47:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 06:47:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:04,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:04,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:04,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:04,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:04,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:47:04,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:04,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:04,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:04,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:04,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:04,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 06:47:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:05,731 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2020-10-27 06:47:06,625 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 06:47:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:06,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:06,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:06,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:06,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:47:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:47:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:06,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:47:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:06,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:47:06,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,659 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 30 [2020-10-27 06:47:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:07,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:47:07,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:47:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:47:07,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:07,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:07,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:07,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:07,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:07,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 06:47:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:07,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:07,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 46 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-27 06:47:07,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953360467] [2020-10-27 06:47:07,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:47:07,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 06:47:07,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223347522] [2020-10-27 06:47:07,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 06:47:07,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:47:07,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 06:47:07,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2020-10-27 06:47:07,912 INFO L87 Difference]: Start difference. First operand 91 states and 124 transitions. Second operand 29 states. [2020-10-27 06:47:09,144 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 06:47:09,900 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 06:47:10,831 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-27 06:47:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:47:12,488 INFO L93 Difference]: Finished difference Result 122 states and 163 transitions. [2020-10-27 06:47:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 06:47:12,489 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 78 [2020-10-27 06:47:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:47:12,491 INFO L225 Difference]: With dead ends: 122 [2020-10-27 06:47:12,491 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 06:47:12,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=255, Invalid=1815, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 06:47:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 06:47:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2020-10-27 06:47:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 06:47:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2020-10-27 06:47:12,515 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 130 transitions. Word has length 78 [2020-10-27 06:47:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:47:12,516 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 130 transitions. [2020-10-27 06:47:12,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 06:47:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 130 transitions. [2020-10-27 06:47:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-27 06:47:12,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:47:12,518 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 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] [2020-10-27 06:47:12,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:47:12,518 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:47:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:47:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1019792416, now seen corresponding path program 2 times [2020-10-27 06:47:12,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:47:12,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088564049] [2020-10-27 06:47:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:47:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:12,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1694 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:47:14,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:14,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:14,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:47:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:14,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:47:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:47:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:47:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:47:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:14,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:14,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:47:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:14,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:47:14,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 06:47:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:14,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:14,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 06:47:14,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088564049] [2020-10-27 06:47:14,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:47:14,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 06:47:14,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352638972] [2020-10-27 06:47:14,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 06:47:14,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:47:14,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 06:47:14,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 06:47:14,798 INFO L87 Difference]: Start difference. First operand 94 states and 130 transitions. Second operand 16 states. [2020-10-27 06:47:16,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:47:16,163 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2020-10-27 06:47:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 06:47:16,164 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-27 06:47:16,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:47:16,166 INFO L225 Difference]: With dead ends: 134 [2020-10-27 06:47:16,166 INFO L226 Difference]: Without dead ends: 104 [2020-10-27 06:47:16,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-27 06:47:16,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-27 06:47:16,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-27 06:47:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 06:47:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 149 transitions. [2020-10-27 06:47:16,187 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 149 transitions. Word has length 68 [2020-10-27 06:47:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:47:16,187 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 149 transitions. [2020-10-27 06:47:16,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 06:47:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 149 transitions. [2020-10-27 06:47:16,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 06:47:16,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:47:16,189 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2020-10-27 06:47:16,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:47:16,190 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:47:16,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:47:16,190 INFO L82 PathProgramCache]: Analyzing trace with hash -157158818, now seen corresponding path program 3 times [2020-10-27 06:47:16,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:47:16,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335637140] [2020-10-27 06:47:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:47:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:16,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:16,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:17,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:17,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:21,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:21,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 06:47:21,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 06:47:21,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:21,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:21,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:47:21,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:21,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 06:47:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:47:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:21,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:47:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:22,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:22,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:22,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:22,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:47:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:22,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:47:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:22,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:22,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:47:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:47:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:47:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:23,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:23,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:23,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:23,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:23,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:23,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:23,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 06:47:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:23,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:47:23,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 06:47:23,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335637140] [2020-10-27 06:47:23,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:47:23,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 06:47:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21687069] [2020-10-27 06:47:23,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 06:47:23,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:47:23,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 06:47:23,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=1114, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 06:47:23,424 INFO L87 Difference]: Start difference. First operand 104 states and 149 transitions. Second operand 35 states. [2020-10-27 06:47:27,371 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-27 06:47:27,694 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 06:47:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:47:28,955 INFO L93 Difference]: Finished difference Result 157 states and 233 transitions. [2020-10-27 06:47:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 06:47:28,956 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 81 [2020-10-27 06:47:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:47:28,960 INFO L225 Difference]: With dead ends: 157 [2020-10-27 06:47:28,960 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 06:47:28,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=420, Invalid=3740, Unknown=0, NotChecked=0, Total=4160 [2020-10-27 06:47:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 06:47:28,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 137. [2020-10-27 06:47:28,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 06:47:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 206 transitions. [2020-10-27 06:47:29,004 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 206 transitions. Word has length 81 [2020-10-27 06:47:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:47:29,004 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 206 transitions. [2020-10-27 06:47:29,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 06:47:29,004 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 206 transitions. [2020-10-27 06:47:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 06:47:29,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:47:29,007 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:47:29,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:47:29,007 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:47:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:47:29,008 INFO L82 PathProgramCache]: Analyzing trace with hash 939934977, now seen corresponding path program 4 times [2020-10-27 06:47:29,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:47:29,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711203287] [2020-10-27 06:47:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:47:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:31,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 06:47:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:34,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 06:47:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:47:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 06:47:34,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:34,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:34,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:34,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:47:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:35,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:47:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:47:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:47:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:47:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:47:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:47:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:47:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:47:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:47:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:35,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:47:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:47:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 06:47:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 44 proven. 29 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-27 06:47:35,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711203287] [2020-10-27 06:47:35,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:47:35,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 06:47:35,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188910770] [2020-10-27 06:47:35,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 06:47:35,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:47:35,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 06:47:35,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-27 06:47:35,491 INFO L87 Difference]: Start difference. First operand 137 states and 206 transitions. Second operand 21 states. [2020-10-27 06:47:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:47:37,670 INFO L93 Difference]: Finished difference Result 189 states and 293 transitions. [2020-10-27 06:47:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 06:47:37,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 91 [2020-10-27 06:47:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:47:37,673 INFO L225 Difference]: With dead ends: 189 [2020-10-27 06:47:37,674 INFO L226 Difference]: Without dead ends: 159 [2020-10-27 06:47:37,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=163, Invalid=1097, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 06:47:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-27 06:47:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2020-10-27 06:47:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-27 06:47:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 251 transitions. [2020-10-27 06:47:37,706 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 251 transitions. Word has length 91 [2020-10-27 06:47:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:47:37,707 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 251 transitions. [2020-10-27 06:47:37,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 06:47:37,707 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 251 transitions. [2020-10-27 06:47:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 06:47:37,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:47:37,710 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:47:37,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:47:37,711 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:47:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:47:37,711 INFO L82 PathProgramCache]: Analyzing trace with hash 614627775, now seen corresponding path program 5 times [2020-10-27 06:47:37,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:47:37,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494789672] [2020-10-27 06:47:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:47:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:42,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 06:47:42,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:47:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:47:42,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 06:47:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:47:42,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 06:47:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:42,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:42,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:42,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:43,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:43,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 06:47:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:44,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 06:47:44,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:47:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:47:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:44,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:47:44,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:44,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:44,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:47:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:47:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:44,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:47:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:44,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:44,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:47:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:45,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:45,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:45,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:47:45,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:45,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:47:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:47:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:47:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:47:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:47:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:47:45,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:45,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:47:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 06:47:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:47:45,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:47:45,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:47:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:45,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 10 proven. 74 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-27 06:47:45,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494789672] [2020-10-27 06:47:45,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:47:45,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 06:47:45,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947689170] [2020-10-27 06:47:45,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 06:47:45,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:47:45,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 06:47:45,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2020-10-27 06:47:45,499 INFO L87 Difference]: Start difference. First operand 155 states and 251 transitions. Second operand 28 states. [2020-10-27 06:47:47,400 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-27 06:47:47,741 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-27 06:47:48,213 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-27 06:47:48,502 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 06:47:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:47:49,499 INFO L93 Difference]: Finished difference Result 201 states and 308 transitions. [2020-10-27 06:47:49,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 06:47:49,500 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 91 [2020-10-27 06:47:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:47:49,502 INFO L225 Difference]: With dead ends: 201 [2020-10-27 06:47:49,503 INFO L226 Difference]: Without dead ends: 165 [2020-10-27 06:47:49,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 06:47:49,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-27 06:47:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2020-10-27 06:47:49,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-27 06:47:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 249 transitions. [2020-10-27 06:47:49,547 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 249 transitions. Word has length 91 [2020-10-27 06:47:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:47:49,548 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 249 transitions. [2020-10-27 06:47:49,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 06:47:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 249 transitions. [2020-10-27 06:47:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 06:47:49,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:47:49,553 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:47:49,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:47:49,553 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:47:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:47:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 2042320665, now seen corresponding path program 6 times [2020-10-27 06:47:49,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:47:49,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542234091] [2020-10-27 06:47:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:47:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:50,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:54,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:47:54,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 06:47:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:47:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:55,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:55,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:55,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:55,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:47:55,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:55,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:47:55,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:55,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:47:55,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:47:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:47:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1806 [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 06:47:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:47:56,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 06:47:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:47:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:47:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:57,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:47:58,119 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-27 06:47:59,045 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 06:47:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:47:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:47:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:47:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:47:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:47:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:47:59,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:01,667 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 238 DAG size of output: 33 [2020-10-27 06:48:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:01,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:01,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:01,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:01,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:48:01,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:01,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:01,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:01,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:01,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:48:01,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:01,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:01,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:48:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:01,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:48:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:01,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:48:02,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:48:02,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:02,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:48:02,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:02,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 06:48:02,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:48:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:48:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:48:02,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:02,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 06:48:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:02,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 20 proven. 62 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-27 06:48:02,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542234091] [2020-10-27 06:48:02,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:48:02,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-27 06:48:02,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395145584] [2020-10-27 06:48:02,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-27 06:48:02,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:48:02,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-27 06:48:02,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2020-10-27 06:48:02,861 INFO L87 Difference]: Start difference. First operand 155 states and 249 transitions. Second operand 32 states. [2020-10-27 06:48:04,118 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 06:48:05,638 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-27 06:48:06,750 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-27 06:48:07,191 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-27 06:48:07,582 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 06:48:08,531 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:48:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:48:11,924 INFO L93 Difference]: Finished difference Result 208 states and 321 transitions. [2020-10-27 06:48:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 06:48:11,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 91 [2020-10-27 06:48:11,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:48:11,935 INFO L225 Difference]: With dead ends: 208 [2020-10-27 06:48:11,935 INFO L226 Difference]: Without dead ends: 191 [2020-10-27 06:48:11,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=364, Invalid=3058, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 06:48:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-27 06:48:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 164. [2020-10-27 06:48:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 06:48:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 272 transitions. [2020-10-27 06:48:11,966 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 272 transitions. Word has length 91 [2020-10-27 06:48:11,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:48:11,966 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 272 transitions. [2020-10-27 06:48:11,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-27 06:48:11,967 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 272 transitions. [2020-10-27 06:48:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 06:48:11,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:48:11,970 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:48:11,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:48:11,970 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:48:11,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:48:11,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1701876517, now seen corresponding path program 5 times [2020-10-27 06:48:11,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:48:11,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082949928] [2020-10-27 06:48:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:48:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:12,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:12,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 06:48:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:48:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:17,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:17,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:48:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:48:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 06:48:17,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:17,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:48:17,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 06:48:17,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:48:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:48:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 06:48:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:17,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:48:17,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:48:17,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:48:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:17,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 06:48:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:48:17,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:48:17,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:17,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:48:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:18,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 06:48:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:18,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 44 proven. 34 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-27 06:48:18,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082949928] [2020-10-27 06:48:18,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:48:18,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 06:48:18,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524086470] [2020-10-27 06:48:18,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 06:48:18,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:48:18,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 06:48:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-27 06:48:18,256 INFO L87 Difference]: Start difference. First operand 164 states and 272 transitions. Second operand 21 states. [2020-10-27 06:48:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:48:21,358 INFO L93 Difference]: Finished difference Result 228 states and 404 transitions. [2020-10-27 06:48:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 06:48:21,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 91 [2020-10-27 06:48:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:48:21,362 INFO L225 Difference]: With dead ends: 228 [2020-10-27 06:48:21,362 INFO L226 Difference]: Without dead ends: 198 [2020-10-27 06:48:21,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 06:48:21,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-27 06:48:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2020-10-27 06:48:21,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 06:48:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 356 transitions. [2020-10-27 06:48:21,396 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 356 transitions. Word has length 91 [2020-10-27 06:48:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:48:21,397 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 356 transitions. [2020-10-27 06:48:21,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 06:48:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 356 transitions. [2020-10-27 06:48:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 06:48:21,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:48:21,401 INFO L422 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-27 06:48:21,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:48:21,401 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:48:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:48:21,402 INFO L82 PathProgramCache]: Analyzing trace with hash -501724676, now seen corresponding path program 7 times [2020-10-27 06:48:21,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:48:21,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869336572] [2020-10-27 06:48:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:48:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 06:48:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:48:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:26,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:26,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:26,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:26,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:48:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:26,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:27,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 06:48:27,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:48:28,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 06:48:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:48:28,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:48:28,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:48:28,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:48:28,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:28,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:28,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 06:48:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:48:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 06:48:28,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:48:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:48:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:48:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:28,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:28,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 06:48:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:48:28,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 06:48:28,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 06:48:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:48:28,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:48:28,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:28,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:48:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:28,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:28,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:48:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:48:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 06:48:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:29,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:29,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 60 proven. 56 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 06:48:29,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869336572] [2020-10-27 06:48:29,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:48:29,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 06:48:29,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735124627] [2020-10-27 06:48:29,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 06:48:29,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:48:29,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 06:48:29,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-27 06:48:29,101 INFO L87 Difference]: Start difference. First operand 194 states and 356 transitions. Second operand 27 states. [2020-10-27 06:48:30,783 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-27 06:48:31,233 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-27 06:48:31,459 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-27 06:48:31,874 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-27 06:48:32,062 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-27 06:48:32,438 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-27 06:48:32,729 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-27 06:48:33,107 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-27 06:48:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:48:33,927 INFO L93 Difference]: Finished difference Result 219 states and 382 transitions. [2020-10-27 06:48:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 06:48:33,928 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 101 [2020-10-27 06:48:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:48:33,933 INFO L225 Difference]: With dead ends: 219 [2020-10-27 06:48:33,933 INFO L226 Difference]: Without dead ends: 196 [2020-10-27 06:48:33,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=330, Invalid=2532, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 06:48:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-27 06:48:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-10-27 06:48:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-27 06:48:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 352 transitions. [2020-10-27 06:48:33,970 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 352 transitions. Word has length 101 [2020-10-27 06:48:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:48:33,970 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 352 transitions. [2020-10-27 06:48:33,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 06:48:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 352 transitions. [2020-10-27 06:48:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 06:48:33,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:48:33,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-27 06:48:33,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:48:33,974 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:48:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:48:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 243248766, now seen corresponding path program 1 times [2020-10-27 06:48:33,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:48:33,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477145504] [2020-10-27 06:48:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:48:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:39,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 06:48:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:48:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:39,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:48:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:48:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:39,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:39,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:48:39,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:48:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:40,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:40,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:48:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:40,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:40,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:40,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:48:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:40,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:40,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 06:48:40,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:48:40,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-27 06:48:40,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 06:48:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:40,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:48:40,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:40,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:40,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:40,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:40,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:48:40,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:41,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:41,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:41,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 06:48:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:41,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:41,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:41,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:41,335 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 06:48:41,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477145504] [2020-10-27 06:48:41,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:48:41,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-27 06:48:41,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280757504] [2020-10-27 06:48:41,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-27 06:48:41,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:48:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-27 06:48:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1317, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 06:48:41,345 INFO L87 Difference]: Start difference. First operand 194 states and 352 transitions. Second operand 38 states. [2020-10-27 06:48:43,195 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-27 06:48:43,402 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-10-27 06:48:43,991 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-27 06:48:44,326 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-27 06:48:44,623 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-27 06:48:44,882 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-27 06:48:45,104 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-27 06:48:45,286 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-27 06:48:45,570 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-27 06:48:47,117 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 06:48:48,815 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-27 06:48:48,988 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-27 06:48:49,188 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-27 06:48:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:48:49,443 INFO L93 Difference]: Finished difference Result 394 states and 990 transitions. [2020-10-27 06:48:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 06:48:49,449 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 82 [2020-10-27 06:48:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:48:49,456 INFO L225 Difference]: With dead ends: 394 [2020-10-27 06:48:49,456 INFO L226 Difference]: Without dead ends: 391 [2020-10-27 06:48:49,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=585, Invalid=5115, Unknown=0, NotChecked=0, Total=5700 [2020-10-27 06:48:49,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-27 06:48:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 322. [2020-10-27 06:48:49,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-27 06:48:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 758 transitions. [2020-10-27 06:48:49,542 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 758 transitions. Word has length 82 [2020-10-27 06:48:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:48:49,543 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 758 transitions. [2020-10-27 06:48:49,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-27 06:48:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 758 transitions. [2020-10-27 06:48:49,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 06:48:49,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:48:49,550 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2020-10-27 06:48:49,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:48:49,550 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:48:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:48:49,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1982791236, now seen corresponding path program 1 times [2020-10-27 06:48:49,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:48:49,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921344565] [2020-10-27 06:48:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:48:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:49,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:50,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:50,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:48:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:48:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:54,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:48:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:48:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:55,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:48:55,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:55,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 06:48:55,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:48:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 06:48:55,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:55,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:48:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:48:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:48:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:48:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:48:55,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:48:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:48:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:48:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:55,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 06:48:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:56,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:48:56,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:48:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:48:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:56,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:48:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:48:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:48:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 06:48:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:48:56,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:48:56,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:48:56,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:48:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 06:48:56,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921344565] [2020-10-27 06:48:56,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:48:56,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 06:48:56,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414931916] [2020-10-27 06:48:56,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 06:48:56,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:48:56,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 06:48:56,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1112, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 06:48:56,809 INFO L87 Difference]: Start difference. First operand 322 states and 758 transitions. Second operand 35 states. [2020-10-27 06:49:01,413 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 06:49:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:49:02,307 INFO L93 Difference]: Finished difference Result 419 states and 959 transitions. [2020-10-27 06:49:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 06:49:02,308 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 83 [2020-10-27 06:49:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:49:02,315 INFO L225 Difference]: With dead ends: 419 [2020-10-27 06:49:02,316 INFO L226 Difference]: Without dead ends: 416 [2020-10-27 06:49:02,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=415, Invalid=3617, Unknown=0, NotChecked=0, Total=4032 [2020-10-27 06:49:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-27 06:49:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 354. [2020-10-27 06:49:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-10-27 06:49:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 849 transitions. [2020-10-27 06:49:02,380 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 849 transitions. Word has length 83 [2020-10-27 06:49:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:49:02,381 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 849 transitions. [2020-10-27 06:49:02,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 06:49:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 849 transitions. [2020-10-27 06:49:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 06:49:02,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:49:02,388 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2020-10-27 06:49:02,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:49:02,388 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:49:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:49:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1021177219, now seen corresponding path program 1 times [2020-10-27 06:49:02,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:49:02,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492230912] [2020-10-27 06:49:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:49:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:02,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:02,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 06:49:02,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 06:49:02,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:49:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:49:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:49:03,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:49:03,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:49:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 06:49:03,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 06:49:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:03,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:49:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:03,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:03,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 06:49:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:03,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-27 06:49:03,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492230912] [2020-10-27 06:49:03,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:49:03,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 06:49:03,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594640573] [2020-10-27 06:49:03,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 06:49:03,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:49:03,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 06:49:03,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-27 06:49:03,652 INFO L87 Difference]: Start difference. First operand 354 states and 849 transitions. Second operand 21 states. [2020-10-27 06:49:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:49:06,810 INFO L93 Difference]: Finished difference Result 509 states and 1328 transitions. [2020-10-27 06:49:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 06:49:06,811 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-10-27 06:49:06,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:49:06,820 INFO L225 Difference]: With dead ends: 509 [2020-10-27 06:49:06,820 INFO L226 Difference]: Without dead ends: 506 [2020-10-27 06:49:06,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 06:49:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-27 06:49:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 416. [2020-10-27 06:49:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-27 06:49:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1073 transitions. [2020-10-27 06:49:06,953 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1073 transitions. Word has length 83 [2020-10-27 06:49:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:49:06,953 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 1073 transitions. [2020-10-27 06:49:06,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 06:49:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1073 transitions. [2020-10-27 06:49:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-27 06:49:06,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:49:06,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2020-10-27 06:49:06,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 06:49:06,963 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:49:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:49:06,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1235733788, now seen corresponding path program 1 times [2020-10-27 06:49:06,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:49:06,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977427146] [2020-10-27 06:49:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:49:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:07,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3559 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 06:49:10,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:49:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:10,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:10,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:49:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:49:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:49:10,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 06:49:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 06:49:11,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:11,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:11,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:11,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:49:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:11,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:11,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:11,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 06:49:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:11,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:11,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:11,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:49:11,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-27 06:49:11,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977427146] [2020-10-27 06:49:11,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:49:11,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 06:49:11,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265975224] [2020-10-27 06:49:11,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 06:49:11,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:49:11,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 06:49:11,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-27 06:49:11,618 INFO L87 Difference]: Start difference. First operand 416 states and 1073 transitions. Second operand 25 states. [2020-10-27 06:49:12,388 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 06:49:12,857 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-27 06:49:13,056 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-27 06:49:13,238 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-27 06:49:13,447 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-27 06:49:13,674 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-27 06:49:13,881 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-27 06:49:16,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:49:16,041 INFO L93 Difference]: Finished difference Result 525 states and 1341 transitions. [2020-10-27 06:49:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 06:49:16,047 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 83 [2020-10-27 06:49:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:49:16,055 INFO L225 Difference]: With dead ends: 525 [2020-10-27 06:49:16,055 INFO L226 Difference]: Without dead ends: 522 [2020-10-27 06:49:16,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=293, Invalid=2059, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 06:49:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-10-27 06:49:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 408. [2020-10-27 06:49:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-27 06:49:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1039 transitions. [2020-10-27 06:49:16,146 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1039 transitions. Word has length 83 [2020-10-27 06:49:16,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:49:16,147 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 1039 transitions. [2020-10-27 06:49:16,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 06:49:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1039 transitions. [2020-10-27 06:49:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 06:49:16,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:49:16,155 INFO L422 BasicCegarLoop]: trace histogram [9, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:49:16,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 06:49:16,156 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:49:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:49:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1332899872, now seen corresponding path program 8 times [2020-10-27 06:49:16,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:49:16,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979813020] [2020-10-27 06:49:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:49:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 06:49:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:21,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:49:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:49:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 549 [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 06:49:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 06:49:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 06:49:22,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:49:22,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:22,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-27 06:49:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:22,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 06:49:22,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 06:49:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:22,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:49:22,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:49:22,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:22,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:22,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:22,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:49:22,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:22,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 06:49:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 06:49:22,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:49:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 06:49:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:23,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:49:23,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:49:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:49:23,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:49:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 06:49:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:23,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 37 proven. 114 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-27 06:49:23,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979813020] [2020-10-27 06:49:23,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:49:23,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 06:49:23,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177880553] [2020-10-27 06:49:23,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 06:49:23,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:49:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 06:49:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-27 06:49:23,564 INFO L87 Difference]: Start difference. First operand 408 states and 1039 transitions. Second operand 25 states. [2020-10-27 06:49:24,646 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-27 06:49:25,718 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-27 06:49:25,923 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-27 06:49:27,811 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-27 06:49:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:49:28,538 INFO L93 Difference]: Finished difference Result 516 states and 1268 transitions. [2020-10-27 06:49:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-27 06:49:28,541 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-10-27 06:49:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:49:28,547 INFO L225 Difference]: With dead ends: 516 [2020-10-27 06:49:28,548 INFO L226 Difference]: Without dead ends: 444 [2020-10-27 06:49:28,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=348, Invalid=2408, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 06:49:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-10-27 06:49:28,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 414. [2020-10-27 06:49:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-27 06:49:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1002 transitions. [2020-10-27 06:49:28,642 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1002 transitions. Word has length 114 [2020-10-27 06:49:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:49:28,644 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 1002 transitions. [2020-10-27 06:49:28,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 06:49:28,645 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1002 transitions. [2020-10-27 06:49:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 06:49:28,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:49:28,656 INFO L422 BasicCegarLoop]: trace histogram [11, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:49:28,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 06:49:28,656 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:49:28,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:49:28,657 INFO L82 PathProgramCache]: Analyzing trace with hash 621599197, now seen corresponding path program 9 times [2020-10-27 06:49:28,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:49:28,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105733932] [2020-10-27 06:49:28,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:49:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:28,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:29,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 06:49:33,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:49:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:33,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:33,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:33,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:33,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:49:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:33,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:34,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 06:49:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 06:49:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 06:49:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 06:49:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:35,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:35,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:49:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 06:49:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:49:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:35,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:35,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:49:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 06:49:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:35,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 06:49:36,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 06:49:36,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 06:49:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 06:49:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 06:49:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:49:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:49:36,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:49:36,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 06:49:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 06:49:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 06:49:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 06:49:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:36,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:49:36,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 06:49:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:36,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:49:36,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 06:49:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 99 proven. 89 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-27 06:49:37,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105733932] [2020-10-27 06:49:37,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:49:37,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 06:49:37,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69774906] [2020-10-27 06:49:37,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 06:49:37,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:49:37,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 06:49:37,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-27 06:49:37,015 INFO L87 Difference]: Start difference. First operand 414 states and 1002 transitions. Second operand 30 states. [2020-10-27 06:49:38,975 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-27 06:49:39,403 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-27 06:49:39,880 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-27 06:49:40,537 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-27 06:49:40,835 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-27 06:49:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:49:42,443 INFO L93 Difference]: Finished difference Result 513 states and 1197 transitions. [2020-10-27 06:49:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 06:49:42,444 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 124 [2020-10-27 06:49:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:49:42,451 INFO L225 Difference]: With dead ends: 513 [2020-10-27 06:49:42,451 INFO L226 Difference]: Without dead ends: 462 [2020-10-27 06:49:42,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=447, Invalid=2975, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 06:49:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-10-27 06:49:42,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 456. [2020-10-27 06:49:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-27 06:49:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1122 transitions. [2020-10-27 06:49:42,539 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1122 transitions. Word has length 124 [2020-10-27 06:49:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:49:42,539 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 1122 transitions. [2020-10-27 06:49:42,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 06:49:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1122 transitions. [2020-10-27 06:49:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 06:49:42,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:49:42,553 INFO L422 BasicCegarLoop]: trace histogram [11, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:49:42,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 06:49:42,553 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:49:42,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:49:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash -259579619, now seen corresponding path program 10 times [2020-10-27 06:49:42,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:49:42,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707064481] [2020-10-27 06:49:42,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:49:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:43,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-27 06:49:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 06:49:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 06:49:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:49:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:47,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:47,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:47,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:49:47,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:49:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:47,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:49:47,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:47,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:49:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:48,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 06:49:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:48,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:49,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:49,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 06:49:49,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 06:49:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 06:49:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:49,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:49,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:49:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:49,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:49,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:49,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:49:49,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:49:49,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:49:49,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 06:49:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:49:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:49:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 06:49:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0