/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:34:31,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:34:31,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:34:31,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:34:31,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:34:31,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:34:31,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:34:31,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:34:31,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:34:31,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:34:31,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:34:31,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:34:31,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:34:31,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:34:31,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:34:31,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:34:31,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:34:31,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:34:31,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:34:31,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:34:31,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:34:31,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:34:31,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:34:31,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:34:31,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:34:31,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:34:31,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:34:31,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:34:31,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:34:31,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:34:31,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:34:31,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:34:31,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:34:31,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:34:31,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:34:31,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:34:31,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:34:31,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:34:31,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:34:31,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:34:31,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:34:31,290 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 [2020-10-28 10:34:31,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:34:31,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:34:31,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:34:31,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:34:31,334 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:34:31,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:34:31,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:34:31,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:34:31,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:34:31,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:34:31,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:34:31,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:34:31,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:34:31,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:34:31,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:34:31,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:34:31,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:34:31,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:34:31,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:34:31,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:34:31,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:34:31,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:34:31,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:34:31,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:34:31,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:34:31,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:34:31,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:34:31,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:34:31,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:34:31,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:34:31,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:34:31,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:34:31,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:34:31,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:34:31,723 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:34:31,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-28 10:34:31,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd180eb4/265b79ee4cc041229ec6bdd16b3fed27/FLAGa1b0d41b8 [2020-10-28 10:34:32,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:34:32,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-28 10:34:32,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd180eb4/265b79ee4cc041229ec6bdd16b3fed27/FLAGa1b0d41b8 [2020-10-28 10:34:33,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdd180eb4/265b79ee4cc041229ec6bdd16b3fed27 [2020-10-28 10:34:33,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:34:33,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:34:33,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:34:33,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:34:33,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:34:33,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:33" (1/1) ... [2020-10-28 10:34:33,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed6162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:33, skipping insertion in model container [2020-10-28 10:34:33,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:34:33" (1/1) ... [2020-10-28 10:34:33,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:34:33,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:34:34,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:34:34,841 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:34:35,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:34:35,722 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:34:35,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35 WrapperNode [2020-10-28 10:34:35,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:34:35,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:34:35,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:34:35,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:34:35,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:35,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:35,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:35,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:35,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:35,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:36,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (1/1) ... [2020-10-28 10:34:36,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:34:36,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:34:36,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:34:36,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:34:36,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (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 [2020-10-28 10:34:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:34:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:34:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:34:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:34:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:34:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:34:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:34:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:34:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:34:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:34:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:34:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:34:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:34:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:34:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:34:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:34:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:34:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:34:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:34:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:34:41,196 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:34:41,196 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:34:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:41 BoogieIcfgContainer [2020-10-28 10:34:41,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:34:41,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:34:41,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:34:41,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:34:41,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:34:33" (1/3) ... [2020-10-28 10:34:41,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe80bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:41, skipping insertion in model container [2020-10-28 10:34:41,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:34:35" (2/3) ... [2020-10-28 10:34:41,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe80bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:34:41, skipping insertion in model container [2020-10-28 10:34:41,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:34:41" (3/3) ... [2020-10-28 10:34:41,208 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label45.c [2020-10-28 10:34:41,221 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:34:41,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:34:41,240 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:34:41,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:34:41,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:34:41,274 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:34:41,274 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:34:41,274 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:34:41,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:34:41,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:34:41,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:34:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:34:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-28 10:34:41,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:41,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:34:41,376 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:41,383 INFO L82 PathProgramCache]: Analyzing trace with hash -904691336, now seen corresponding path program 1 times [2020-10-28 10:34:41,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:41,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025008935] [2020-10-28 10:34:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:47,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:47,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-28 10:34:47,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-28 10:34:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:47,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:34:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:34:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-28 10:34:47,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:34:48,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:48,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:48,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:48,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:48,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 10:34:48,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:48,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:48,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:34:48,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:34:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:34:48,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025008935] [2020-10-28 10:34:48,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:34:48,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:34:48,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571635186] [2020-10-28 10:34:48,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:34:48,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:34:48,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:34:48,973 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-28 10:34:49,146 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:00,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:00,521 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-28 10:35:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:35:00,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 779 [2020-10-28 10:35:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:00,584 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:35:00,584 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:35:00,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:35:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:35:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-28 10:35:00,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-28 10:35:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2974 transitions. [2020-10-28 10:35:00,806 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2974 transitions. Word has length 779 [2020-10-28 10:35:00,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:00,812 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2974 transitions. [2020-10-28 10:35:00,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:35:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2974 transitions. [2020-10-28 10:35:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-28 10:35:00,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:00,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:00,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:35:00,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:00,849 INFO L82 PathProgramCache]: Analyzing trace with hash 937001907, now seen corresponding path program 1 times [2020-10-28 10:35:00,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:00,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382052837] [2020-10-28 10:35:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-28 10:35:06,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-28 10:35:06,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:35:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:35:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:35:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:06,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:06,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:35:06,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:06,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:06,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:06,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:06,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:35:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:06,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:35:06,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:06,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:06,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:35:06,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:35:07,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382052837] [2020-10-28 10:35:07,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:35:07,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:35:07,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833563162] [2020-10-28 10:35:07,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:07,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:07,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:07,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:07,159 INFO L87 Difference]: Start difference. First operand 1688 states and 2974 transitions. Second operand 7 states. [2020-10-28 10:35:07,292 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:19,221 INFO L93 Difference]: Finished difference Result 5132 states and 9072 transitions. [2020-10-28 10:35:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:35:19,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 788 [2020-10-28 10:35:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:19,245 INFO L225 Difference]: With dead ends: 5132 [2020-10-28 10:35:19,245 INFO L226 Difference]: Without dead ends: 3450 [2020-10-28 10:35:19,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:35:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2020-10-28 10:35:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3418. [2020-10-28 10:35:19,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3418 states. [2020-10-28 10:35:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5277 transitions. [2020-10-28 10:35:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5277 transitions. Word has length 788 [2020-10-28 10:35:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:19,381 INFO L481 AbstractCegarLoop]: Abstraction has 3418 states and 5277 transitions. [2020-10-28 10:35:19,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:35:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5277 transitions. [2020-10-28 10:35:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-28 10:35:19,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:19,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:19,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:35:19,398 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:19,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash -208099046, now seen corresponding path program 1 times [2020-10-28 10:35:19,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:19,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627647509] [2020-10-28 10:35:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:19,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:20,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:24,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-28 10:35:24,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-28 10:35:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:24,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 10:35:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:35:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-28 10:35:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:25,230 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:35:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:25,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:25,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:35:25,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:25,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:25,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:35:25,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:25,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:25,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:25,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:35:25,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:35:25,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:35:25,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:25,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:25,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:35:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:35:26,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627647509] [2020-10-28 10:35:26,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:35:26,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:35:26,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458849299] [2020-10-28 10:35:26,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:35:26,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:26,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:35:26,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:35:26,421 INFO L87 Difference]: Start difference. First operand 3418 states and 5277 transitions. Second operand 6 states. [2020-10-28 10:35:26,551 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:35:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:35:43,447 INFO L93 Difference]: Finished difference Result 13662 states and 21663 transitions. [2020-10-28 10:35:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:35:43,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 805 [2020-10-28 10:35:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:35:43,507 INFO L225 Difference]: With dead ends: 13662 [2020-10-28 10:35:43,507 INFO L226 Difference]: Without dead ends: 10250 [2020-10-28 10:35:43,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:35:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2020-10-28 10:35:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10246. [2020-10-28 10:35:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10246 states. [2020-10-28 10:35:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10246 states to 10246 states and 14565 transitions. [2020-10-28 10:35:43,815 INFO L78 Accepts]: Start accepts. Automaton has 10246 states and 14565 transitions. Word has length 805 [2020-10-28 10:35:43,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:35:43,817 INFO L481 AbstractCegarLoop]: Abstraction has 10246 states and 14565 transitions. [2020-10-28 10:35:43,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:35:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10246 states and 14565 transitions. [2020-10-28 10:35:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-28 10:35:43,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:35:43,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:35:43,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:35:43,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:35:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:35:43,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1087720036, now seen corresponding path program 1 times [2020-10-28 10:35:43,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:35:43,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941065067] [2020-10-28 10:35:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:35:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:48,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-28 10:35:48,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:35:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 10:35:48,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:48,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:35:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 10:35:48,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:49,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:35:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:49,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:49,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:35:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:49,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:35:49,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:49,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:35:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:49,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:35:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:35:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:35:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:49,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:49,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:35:49,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:35:49,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:49,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:35:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:35:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:35:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:49,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:35:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:35:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:35:49,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:35:49,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:35:49,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:35:49,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 10:35:49,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:35:49,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:35:49,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:35:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:35:49,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:35:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:35:50,138 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 117 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:35:50,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941065067] [2020-10-28 10:35:50,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:35:50,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:35:50,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157152244] [2020-10-28 10:35:50,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:35:50,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:35:50,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:35:50,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:35:50,142 INFO L87 Difference]: Start difference. First operand 10246 states and 14565 transitions. Second operand 7 states. [2020-10-28 10:35:59,451 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:04,397 INFO L93 Difference]: Finished difference Result 31020 states and 46202 transitions. [2020-10-28 10:36:04,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:36:04,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 879 [2020-10-28 10:36:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:04,514 INFO L225 Difference]: With dead ends: 31020 [2020-10-28 10:36:04,515 INFO L226 Difference]: Without dead ends: 20780 [2020-10-28 10:36:04,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:36:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20780 states. [2020-10-28 10:36:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20780 to 20693. [2020-10-28 10:36:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20693 states. [2020-10-28 10:36:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20693 states to 20693 states and 29474 transitions. [2020-10-28 10:36:05,228 INFO L78 Accepts]: Start accepts. Automaton has 20693 states and 29474 transitions. Word has length 879 [2020-10-28 10:36:05,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:05,229 INFO L481 AbstractCegarLoop]: Abstraction has 20693 states and 29474 transitions. [2020-10-28 10:36:05,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:05,229 INFO L276 IsEmpty]: Start isEmpty. Operand 20693 states and 29474 transitions. [2020-10-28 10:36:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-28 10:36:05,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:05,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:05,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:36:05,313 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:05,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1239423623, now seen corresponding path program 1 times [2020-10-28 10:36:05,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:05,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994235077] [2020-10-28 10:36:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:09,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-28 10:36:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:10,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 10:36:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:10,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:36:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:36:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:36:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:10,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:10,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:10,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:36:10,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:36:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:10,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:11,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:11,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 10:36:11,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-28 10:36:11,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:36:11,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994235077] [2020-10-28 10:36:11,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:36:11,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:36:11,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690183147] [2020-10-28 10:36:11,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:36:11,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:11,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:36:11,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:36:11,855 INFO L87 Difference]: Start difference. First operand 20693 states and 29474 transitions. Second operand 7 states. [2020-10-28 10:36:11,979 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:36:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:24,738 INFO L93 Difference]: Finished difference Result 59366 states and 86689 transitions. [2020-10-28 10:36:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:36:24,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 974 [2020-10-28 10:36:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:24,896 INFO L225 Difference]: With dead ends: 59366 [2020-10-28 10:36:24,897 INFO L226 Difference]: Without dead ends: 38679 [2020-10-28 10:36:24,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:36:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38679 states. [2020-10-28 10:36:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38679 to 36860. [2020-10-28 10:36:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36860 states. [2020-10-28 10:36:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36860 states to 36860 states and 49311 transitions. [2020-10-28 10:36:25,991 INFO L78 Accepts]: Start accepts. Automaton has 36860 states and 49311 transitions. Word has length 974 [2020-10-28 10:36:25,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:25,992 INFO L481 AbstractCegarLoop]: Abstraction has 36860 states and 49311 transitions. [2020-10-28 10:36:25,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:36:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 36860 states and 49311 transitions. [2020-10-28 10:36:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2020-10-28 10:36:26,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:26,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:26,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:36:26,090 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:26,091 INFO L82 PathProgramCache]: Analyzing trace with hash 8002750, now seen corresponding path program 1 times [2020-10-28 10:36:26,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:26,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738825604] [2020-10-28 10:36:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:26,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:31,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:31,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1109 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-28 10:36:31,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:31,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:31,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:31,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:36:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:32,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:32,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-28 10:36:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-28 10:36:32,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:32,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-28 10:36:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:32,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:36:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:32,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:36:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:32,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:36:32,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:32,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 10:36:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:32,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:32,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:32,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:36:32,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:32,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 299 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:36:33,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738825604] [2020-10-28 10:36:33,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:33,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:36:33,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435185322] [2020-10-28 10:36:33,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:36:33,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:33,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:36:33,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:36:33,877 INFO L87 Difference]: Start difference. First operand 36860 states and 49311 transitions. Second operand 8 states. [2020-10-28 10:36:34,029 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:36:45,191 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-28 10:36:47,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:36:47,667 INFO L93 Difference]: Finished difference Result 89357 states and 121268 transitions. [2020-10-28 10:36:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 10:36:47,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1087 [2020-10-28 10:36:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:36:47,851 INFO L225 Difference]: With dead ends: 89357 [2020-10-28 10:36:47,851 INFO L226 Difference]: Without dead ends: 52503 [2020-10-28 10:36:47,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:36:47,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52503 states. [2020-10-28 10:36:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52503 to 52398. [2020-10-28 10:36:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52398 states. [2020-10-28 10:36:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52398 states to 52398 states and 68484 transitions. [2020-10-28 10:36:49,132 INFO L78 Accepts]: Start accepts. Automaton has 52398 states and 68484 transitions. Word has length 1087 [2020-10-28 10:36:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:36:49,133 INFO L481 AbstractCegarLoop]: Abstraction has 52398 states and 68484 transitions. [2020-10-28 10:36:49,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:36:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 52398 states and 68484 transitions. [2020-10-28 10:36:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-28 10:36:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:36:49,272 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:36:49,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:36:49,273 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:36:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:36:49,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1203920365, now seen corresponding path program 1 times [2020-10-28 10:36:49,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:36:49,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857196189] [2020-10-28 10:36:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:36:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:49,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:54,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-28 10:36:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:36:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-28 10:36:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:36:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:36:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:36:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:54,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:54,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:54,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:36:54,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:36:54,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:36:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:36:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:54,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-28 10:36:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:36:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:55,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:55,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:36:55,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:36:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-28 10:36:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:36:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:36:55,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:36:55,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:36:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 335 proven. 73 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 10:36:56,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857196189] [2020-10-28 10:36:56,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:36:56,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:36:56,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076422498] [2020-10-28 10:36:56,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:36:56,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:36:56,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:36:56,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:36:56,298 INFO L87 Difference]: Start difference. First operand 52398 states and 68484 transitions. Second operand 8 states. [2020-10-28 10:36:56,760 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:37:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:18,577 INFO L93 Difference]: Finished difference Result 121402 states and 162743 transitions. [2020-10-28 10:37:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:37:18,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1106 [2020-10-28 10:37:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:18,876 INFO L225 Difference]: With dead ends: 121402 [2020-10-28 10:37:18,876 INFO L226 Difference]: Without dead ends: 69010 [2020-10-28 10:37:18,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:37:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69010 states. [2020-10-28 10:37:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69010 to 68653. [2020-10-28 10:37:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68653 states. [2020-10-28 10:37:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68653 states to 68653 states and 85913 transitions. [2020-10-28 10:37:21,217 INFO L78 Accepts]: Start accepts. Automaton has 68653 states and 85913 transitions. Word has length 1106 [2020-10-28 10:37:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:21,218 INFO L481 AbstractCegarLoop]: Abstraction has 68653 states and 85913 transitions. [2020-10-28 10:37:21,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:37:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 68653 states and 85913 transitions. [2020-10-28 10:37:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2020-10-28 10:37:21,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:21,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:37:21,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:37:21,456 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:21,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1473612067, now seen corresponding path program 1 times [2020-10-28 10:37:21,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:21,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026250594] [2020-10-28 10:37:21,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:21,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:23,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:26,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:26,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1154 [2020-10-28 10:37:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:37:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-28 10:37:26,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:27,056 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:37:27,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:27,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:27,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:27,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:37:27,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:37:27,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:27,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:37:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:37:27,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:37:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:27,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:37:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-28 10:37:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:37:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:28,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 10:37:28,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 10:37:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:37:29,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026250594] [2020-10-28 10:37:29,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:29,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:37:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065121419] [2020-10-28 10:37:29,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:37:29,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:29,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:37:29,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:37:29,509 INFO L87 Difference]: Start difference. First operand 68653 states and 85913 transitions. Second operand 8 states. [2020-10-28 10:37:29,662 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:37:35,558 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:37:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:37:44,836 INFO L93 Difference]: Finished difference Result 146021 states and 182831 transitions. [2020-10-28 10:37:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:37:44,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1132 [2020-10-28 10:37:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:37:45,105 INFO L225 Difference]: With dead ends: 146021 [2020-10-28 10:37:45,105 INFO L226 Difference]: Without dead ends: 77378 [2020-10-28 10:37:45,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:37:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77378 states. [2020-10-28 10:37:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77378 to 77309. [2020-10-28 10:37:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77309 states. [2020-10-28 10:37:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77309 states to 77309 states and 96045 transitions. [2020-10-28 10:37:47,420 INFO L78 Accepts]: Start accepts. Automaton has 77309 states and 96045 transitions. Word has length 1132 [2020-10-28 10:37:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:37:47,421 INFO L481 AbstractCegarLoop]: Abstraction has 77309 states and 96045 transitions. [2020-10-28 10:37:47,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:37:47,421 INFO L276 IsEmpty]: Start isEmpty. Operand 77309 states and 96045 transitions. [2020-10-28 10:37:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1144 [2020-10-28 10:37:47,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:37:47,533 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:37:47,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:37:47,534 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:37:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:37:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash -292680930, now seen corresponding path program 1 times [2020-10-28 10:37:47,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:37:47,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270701790] [2020-10-28 10:37:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:37:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:47,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:48,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:52,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:52,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1165 [2020-10-28 10:37:52,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:37:52,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 10:37:52,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:53,185 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:37:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:37:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:53,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:53,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:53,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:53,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:37:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:37:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:37:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:53,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:37:53,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:37:53,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 10:37:53,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:53,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 10:37:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:37:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:37:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:37:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 10:37:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:37:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-28 10:37:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:37:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:37:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:37:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:37:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-28 10:37:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:37:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 523 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:37:54,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270701790] [2020-10-28 10:37:54,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:37:54,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:37:54,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020918325] [2020-10-28 10:37:54,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:37:54,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:37:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:37:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:37:54,509 INFO L87 Difference]: Start difference. First operand 77309 states and 96045 transitions. Second operand 7 states. [2020-10-28 10:37:54,810 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:38:00,755 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93