/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:06:06,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:06:06,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:06:06,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:06:06,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:06:06,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:06:06,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:06:06,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:06:06,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:06:06,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:06:06,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:06:06,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:06:06,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:06:06,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:06:06,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:06:06,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:06:06,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:06:06,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:06:06,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:06:06,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:06:06,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:06:06,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:06:06,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:06:06,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:06:06,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:06:06,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:06:06,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:06:06,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:06:06,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:06:06,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:06:06,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:06:06,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:06:06,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:06:06,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:06:06,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:06:06,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:06:06,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:06:06,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:06:06,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:06:06,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:06:06,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:06:06,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:06:06,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:06:06,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:06:06,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:06:06,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:06:06,237 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:06:06,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:06:06,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:06:06,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:06:06,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:06:06,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:06:06,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:06:06,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:06:06,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:06:06,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:06:06,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:06:06,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:06:06,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:06:06,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:06:06,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:06:06,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:06:06,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:06:06,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:06:06,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:06:06,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:06:06,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:06:06,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:06:06,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:06:06,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:06:06,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:06:06,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:06:06,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:06:06,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:06:06,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:06:06,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:06:06,659 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:06:06,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-26 21:06:06,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f59f4639/c7f5c7f9d60c4dea9091556f9191f266/FLAG5c583c36e [2020-10-26 21:06:07,800 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:06:07,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label45.c [2020-10-26 21:06:07,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f59f4639/c7f5c7f9d60c4dea9091556f9191f266/FLAG5c583c36e [2020-10-26 21:06:08,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f59f4639/c7f5c7f9d60c4dea9091556f9191f266 [2020-10-26 21:06:08,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:06:08,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:06:08,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:08,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:06:08,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:06:08,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:08" (1/1) ... [2020-10-26 21:06:08,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afc6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:08, skipping insertion in model container [2020-10-26 21:06:08,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:08" (1/1) ... [2020-10-26 21:06:08,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:06:08,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:06:10,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:10,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:06:10,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:10,957 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:06:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10 WrapperNode [2020-10-26 21:06:10,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:10,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:06:10,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:06:10,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:06:10,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:10,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... [2020-10-26 21:06:11,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:06:11,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:06:11,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:06:11,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:06:11,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:06:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:06:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:06:11,466 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:06:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:06:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:06:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:06:11,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:06:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:06:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:06:11,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:06:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:06:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:06:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:06:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:06:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:06:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:06:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:06:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:06:16,556 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:06:16,556 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:06:16,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:16 BoogieIcfgContainer [2020-10-26 21:06:16,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:06:16,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:06:16,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:06:16,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:06:16,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:06:08" (1/3) ... [2020-10-26 21:06:16,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:16, skipping insertion in model container [2020-10-26 21:06:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:10" (2/3) ... [2020-10-26 21:06:16,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ac506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:16, skipping insertion in model container [2020-10-26 21:06:16,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:16" (3/3) ... [2020-10-26 21:06:16,575 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label45.c [2020-10-26 21:06:16,588 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:06:16,594 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:06:16,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:06:16,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:06:16,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:06:16,656 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:06:16,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:06:16,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:06:16,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:06:16,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:06:16,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:06:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:06:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 780 [2020-10-26 21:06:16,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:16,809 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] [2020-10-26 21:06:16,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:16,819 INFO L82 PathProgramCache]: Analyzing trace with hash -904691336, now seen corresponding path program 1 times [2020-10-26 21:06:16,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:16,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421679215] [2020-10-26 21:06:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:22,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 795 [2020-10-26 21:06:22,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5166 [2020-10-26 21:06:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:06:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-26 21:06:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:06:23,700 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:23,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:23,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:23,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:23,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:06:23,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:23,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:23,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:24,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421679215] [2020-10-26 21:06:24,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:24,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:06:24,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246525547] [2020-10-26 21:06:24,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:06:24,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:24,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:06:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:06:24,971 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:06:35,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:35,817 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-26 21:06:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:06:35,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 779 [2020-10-26 21:06:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:35,869 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:06:35,869 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:06:35,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:06:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:06:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-26 21:06:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-26 21:06:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2974 transitions. [2020-10-26 21:06:36,073 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2974 transitions. Word has length 779 [2020-10-26 21:06:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:36,077 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 2974 transitions. [2020-10-26 21:06:36,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:06:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2974 transitions. [2020-10-26 21:06:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2020-10-26 21:06:36,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:36,118 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] [2020-10-26 21:06:36,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:06:36,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash 937001907, now seen corresponding path program 1 times [2020-10-26 21:06:36,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:36,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996768941] [2020-10-26 21:06:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:41,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:41,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 806 [2020-10-26 21:06:41,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:06:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-26 21:06:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:06:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:06:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:06:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:41,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:41,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:41,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:06:41,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:41,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:41,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:41,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:06:41,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:41,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:41,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:06:41,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:41,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:06:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:06:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:42,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996768941] [2020-10-26 21:06:42,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:42,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:06:42,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557662234] [2020-10-26 21:06:42,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:06:42,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:42,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:06:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:06:42,316 INFO L87 Difference]: Start difference. First operand 1688 states and 2974 transitions. Second operand 7 states. [2020-10-26 21:06:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:06:52,963 INFO L93 Difference]: Finished difference Result 5151 states and 9111 transitions. [2020-10-26 21:06:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:06:52,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 788 [2020-10-26 21:06:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:06:52,986 INFO L225 Difference]: With dead ends: 5151 [2020-10-26 21:06:52,986 INFO L226 Difference]: Without dead ends: 3469 [2020-10-26 21:06:52,992 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 [2020-10-26 21:06:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-10-26 21:06:53,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3418. [2020-10-26 21:06:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3418 states. [2020-10-26 21:06:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 5277 transitions. [2020-10-26 21:06:53,142 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 5277 transitions. Word has length 788 [2020-10-26 21:06:53,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:06:53,143 INFO L481 AbstractCegarLoop]: Abstraction has 3418 states and 5277 transitions. [2020-10-26 21:06:53,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:06:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 5277 transitions. [2020-10-26 21:06:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-26 21:06:53,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:53,159 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] [2020-10-26 21:06:53,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:06:53,160 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:53,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:53,160 INFO L82 PathProgramCache]: Analyzing trace with hash -208099046, now seen corresponding path program 1 times [2020-10-26 21:06:53,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:53,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098975328] [2020-10-26 21:06:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:58,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 823 [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:58,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 814 [2020-10-26 21:06:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:58,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:59,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:59,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:06:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:59,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:06:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 21:06:59,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:06:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:06:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:06:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:07:00,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098975328] [2020-10-26 21:07:00,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:00,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:07:00,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659585352] [2020-10-26 21:07:00,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:00,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:00,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:00,293 INFO L87 Difference]: Start difference. First operand 3418 states and 5277 transitions. Second operand 7 states. [2020-10-26 21:07:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:16,382 INFO L93 Difference]: Finished difference Result 13817 states and 22056 transitions. [2020-10-26 21:07:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:07:16,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 805 [2020-10-26 21:07:16,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:16,451 INFO L225 Difference]: With dead ends: 13817 [2020-10-26 21:07:16,451 INFO L226 Difference]: Without dead ends: 10405 [2020-10-26 21:07:16,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2020-10-26 21:07:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 10371. [2020-10-26 21:07:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10371 states. [2020-10-26 21:07:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10371 states to 10371 states and 14836 transitions. [2020-10-26 21:07:16,824 INFO L78 Accepts]: Start accepts. Automaton has 10371 states and 14836 transitions. Word has length 805 [2020-10-26 21:07:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:16,826 INFO L481 AbstractCegarLoop]: Abstraction has 10371 states and 14836 transitions. [2020-10-26 21:07:16,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 10371 states and 14836 transitions. [2020-10-26 21:07:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-26 21:07:16,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:16,874 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] [2020-10-26 21:07:16,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:07:16,875 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1087720036, now seen corresponding path program 1 times [2020-10-26 21:07:16,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:16,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103953903] [2020-10-26 21:07:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:22,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-26 21:07:22,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-26 21:07:22,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:07:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:22,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:07:22,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:22,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:07:22,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:22,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:07:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:07:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:22,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:22,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:07:22,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:22,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 21:07:22,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:22,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 21:07:22,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 95 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:07:23,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103953903] [2020-10-26 21:07:23,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:23,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:23,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184463073] [2020-10-26 21:07:23,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:07:23,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:23,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:07:23,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:23,107 INFO L87 Difference]: Start difference. First operand 10371 states and 14836 transitions. Second operand 8 states. [2020-10-26 21:07:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:34,824 INFO L93 Difference]: Finished difference Result 31747 states and 50614 transitions. [2020-10-26 21:07:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 21:07:34,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 879 [2020-10-26 21:07:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:34,975 INFO L225 Difference]: With dead ends: 31747 [2020-10-26 21:07:34,975 INFO L226 Difference]: Without dead ends: 21382 [2020-10-26 21:07:35,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 21:07:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21382 states. [2020-10-26 21:07:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21382 to 21018. [2020-10-26 21:07:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21018 states. [2020-10-26 21:07:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21018 states to 21018 states and 28660 transitions. [2020-10-26 21:07:35,800 INFO L78 Accepts]: Start accepts. Automaton has 21018 states and 28660 transitions. Word has length 879 [2020-10-26 21:07:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:35,801 INFO L481 AbstractCegarLoop]: Abstraction has 21018 states and 28660 transitions. [2020-10-26 21:07:35,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:07:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 21018 states and 28660 transitions. [2020-10-26 21:07:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2020-10-26 21:07:35,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:35,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:35,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:07:35,884 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1161183587, now seen corresponding path program 1 times [2020-10-26 21:07:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:35,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235446964] [2020-10-26 21:07:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:36,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:36,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 998 [2020-10-26 21:07:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-26 21:07:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 21:07:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:41,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:41,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:07:41,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:41,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-26 21:07:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:41,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:41,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:07:41,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 193 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:07:42,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235446964] [2020-10-26 21:07:42,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:42,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:42,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476177173] [2020-10-26 21:07:42,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:07:42,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:07:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:07:42,754 INFO L87 Difference]: Start difference. First operand 21018 states and 28660 transitions. Second operand 7 states. [2020-10-26 21:07:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:53,115 INFO L93 Difference]: Finished difference Result 42266 states and 58120 transitions. [2020-10-26 21:07:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:07:53,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 978 [2020-10-26 21:07:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:53,209 INFO L225 Difference]: With dead ends: 42266 [2020-10-26 21:07:53,209 INFO L226 Difference]: Without dead ends: 21254 [2020-10-26 21:07:53,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:07:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21254 states. [2020-10-26 21:07:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21254 to 21159. [2020-10-26 21:07:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21159 states. [2020-10-26 21:07:53,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21159 states to 21159 states and 28919 transitions. [2020-10-26 21:07:53,950 INFO L78 Accepts]: Start accepts. Automaton has 21159 states and 28919 transitions. Word has length 978 [2020-10-26 21:07:53,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:53,951 INFO L481 AbstractCegarLoop]: Abstraction has 21159 states and 28919 transitions. [2020-10-26 21:07:53,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:07:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 21159 states and 28919 transitions. [2020-10-26 21:07:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2020-10-26 21:07:54,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:54,024 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, 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] [2020-10-26 21:07:54,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:07:54,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash 823917763, now seen corresponding path program 1 times [2020-10-26 21:07:54,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:54,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180829409] [2020-10-26 21:07:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:54,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:59,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1006 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-26 21:07:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:59,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:59,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:59,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:59,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:07:59,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:59,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 21:08:00,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-26 21:08:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-26 21:08:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:08:01,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180829409] [2020-10-26 21:08:01,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:08:01,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:08:01,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854022059] [2020-10-26 21:08:01,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:08:01,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:01,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:08:01,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:08:01,014 INFO L87 Difference]: Start difference. First operand 21159 states and 28919 transitions. Second operand 8 states. [2020-10-26 21:08:14,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:14,555 INFO L93 Difference]: Finished difference Result 61120 states and 87191 transitions. [2020-10-26 21:08:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:08:14,556 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 988 [2020-10-26 21:08:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:14,697 INFO L225 Difference]: With dead ends: 61120 [2020-10-26 21:08:14,697 INFO L226 Difference]: Without dead ends: 39967 [2020-10-26 21:08:14,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:08:14,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39967 states. [2020-10-26 21:08:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39967 to 39769. [2020-10-26 21:08:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39769 states. [2020-10-26 21:08:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39769 states to 39769 states and 52216 transitions. [2020-10-26 21:08:15,710 INFO L78 Accepts]: Start accepts. Automaton has 39769 states and 52216 transitions. Word has length 988 [2020-10-26 21:08:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:15,711 INFO L481 AbstractCegarLoop]: Abstraction has 39769 states and 52216 transitions. [2020-10-26 21:08:15,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 39769 states and 52216 transitions. [2020-10-26 21:08:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-26 21:08:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:15,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:15,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:08:15,772 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash -939636466, now seen corresponding path program 1 times [2020-10-26 21:08:15,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:15,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216947917] [2020-10-26 21:08:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:16,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1019 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 21:08:20,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:21,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:08:21,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 21:08:21,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:08:21,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:21,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:08:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:21,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:08:21,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 21:08:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 301 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 21:08:22,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216947917] [2020-10-26 21:08:22,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:22,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:22,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891355766] [2020-10-26 21:08:22,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:22,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:22,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:22,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:22,012 INFO L87 Difference]: Start difference. First operand 39769 states and 52216 transitions. Second operand 7 states. [2020-10-26 21:08:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:35,474 INFO L93 Difference]: Finished difference Result 96420 states and 129190 transitions. [2020-10-26 21:08:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:08:35,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-26 21:08:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:35,655 INFO L225 Difference]: With dead ends: 96420 [2020-10-26 21:08:35,655 INFO L226 Difference]: Without dead ends: 56657 [2020-10-26 21:08:35,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:08:35,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56657 states. [2020-10-26 21:08:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56657 to 54067. [2020-10-26 21:08:37,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54067 states. [2020-10-26 21:08:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54067 states to 54067 states and 67717 transitions. [2020-10-26 21:08:37,303 INFO L78 Accepts]: Start accepts. Automaton has 54067 states and 67717 transitions. Word has length 997 [2020-10-26 21:08:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:37,304 INFO L481 AbstractCegarLoop]: Abstraction has 54067 states and 67717 transitions. [2020-10-26 21:08:37,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:08:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54067 states and 67717 transitions. [2020-10-26 21:08:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1088 [2020-10-26 21:08:37,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:37,371 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] [2020-10-26 21:08:37,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:08:37,371 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:37,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash 8002750, now seen corresponding path program 1 times [2020-10-26 21:08:37,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:37,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204002151] [2020-10-26 21:08:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:37,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:42,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1109 [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:08:42,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 239 [2020-10-26 21:08:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:43,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:43,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:43,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:08:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:43,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:43,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:43,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 21:08:43,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-26 21:08:43,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:43,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-26 21:08:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:43,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:43,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:08:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:08:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-26 21:08:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:43,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 21:08:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 299 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:08:44,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204002151] [2020-10-26 21:08:44,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:44,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:08:44,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873860276] [2020-10-26 21:08:44,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:08:44,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:08:44,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:08:44,902 INFO L87 Difference]: Start difference. First operand 54067 states and 67717 transitions. Second operand 8 states. [2020-10-26 21:08:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:57,110 INFO L93 Difference]: Finished difference Result 124550 states and 157435 transitions. [2020-10-26 21:08:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:08:57,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1087 [2020-10-26 21:08:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:57,358 INFO L225 Difference]: With dead ends: 124550 [2020-10-26 21:08:57,358 INFO L226 Difference]: Without dead ends: 70489 [2020-10-26 21:08:57,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 21:08:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70489 states. [2020-10-26 21:08:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70489 to 70410. [2020-10-26 21:08:58,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70410 states. [2020-10-26 21:08:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70410 states to 70410 states and 86589 transitions. [2020-10-26 21:08:59,150 INFO L78 Accepts]: Start accepts. Automaton has 70410 states and 86589 transitions. Word has length 1087 [2020-10-26 21:08:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:59,151 INFO L481 AbstractCegarLoop]: Abstraction has 70410 states and 86589 transitions. [2020-10-26 21:08:59,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:59,151 INFO L276 IsEmpty]: Start isEmpty. Operand 70410 states and 86589 transitions. [2020-10-26 21:08:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-26 21:08:59,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:59,231 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] [2020-10-26 21:08:59,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:08:59,232 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:59,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1203920365, now seen corresponding path program 1 times [2020-10-26 21:08:59,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:59,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795873937] [2020-10-26 21:08:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:01,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1130 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-26 21:09:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:04,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:04,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:04,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:09:04,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:09:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:05,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:05,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-26 21:09:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-26 21:09:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:05,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:05,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:09:05,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:05,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-26 21:09:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:05,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:05,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:09:05,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:09:05,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-26 21:09:05,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:05,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 335 proven. 73 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 21:09:06,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795873937] [2020-10-26 21:09:06,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:06,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:09:06,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886665202] [2020-10-26 21:09:06,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:09:06,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:09:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:09:06,178 INFO L87 Difference]: Start difference. First operand 70410 states and 86589 transitions. Second operand 7 states. [2020-10-26 21:09:06,436 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:23,869 INFO L93 Difference]: Finished difference Result 149453 states and 183326 transitions. [2020-10-26 21:09:23,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:09:23,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1106 [2020-10-26 21:09:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:24,157 INFO L225 Difference]: With dead ends: 149453 [2020-10-26 21:09:24,158 INFO L226 Difference]: Without dead ends: 79049 [2020-10-26 21:09:24,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79049 states. [2020-10-26 21:09:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79049 to 78180. [2020-10-26 21:09:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78180 states. [2020-10-26 21:09:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78180 states to 78180 states and 91079 transitions. [2020-10-26 21:09:26,429 INFO L78 Accepts]: Start accepts. Automaton has 78180 states and 91079 transitions. Word has length 1106 [2020-10-26 21:09:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 78180 states and 91079 transitions. [2020-10-26 21:09:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 78180 states and 91079 transitions. [2020-10-26 21:09:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2020-10-26 21:09:26,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:26,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:26,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:09:26,522 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:26,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1363931524, now seen corresponding path program 1 times [2020-10-26 21:09:26,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:26,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322745601] [2020-10-26 21:09:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:26,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:31,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1217 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5258 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-26 21:09:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:32,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:32,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:32,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:09:32,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:32,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:32,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 21:09:32,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:09:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:32,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:32,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:09:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:09:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:32,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:32,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:09:32,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 21:09:32,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:32,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:09:32,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-10-26 21:09:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:32,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 508 proven. 184 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-26 21:09:33,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322745601] [2020-10-26 21:09:33,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:33,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 21:09:33,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112187675] [2020-10-26 21:09:33,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 21:09:33,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:33,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 21:09:33,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 21:09:33,904 INFO L87 Difference]: Start difference. First operand 78180 states and 91079 transitions. Second operand 10 states.