/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=DEEPEST --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/Problem12_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:51:28,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:51:28,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:51:28,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:51:28,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:51:28,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:51:28,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:51:28,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:51:28,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:51:28,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:51:28,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:51:28,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:51:28,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:51:28,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:51:28,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:51:28,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:51:28,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:51:28,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:51:28,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:51:28,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:51:28,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:51:28,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:51:28,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:51:28,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:51:28,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:51:28,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:51:28,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:51:28,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:51:28,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:51:28,252 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:51:28,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:51:28,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:51:28,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:51:28,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:51:28,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:51:28,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:51:28,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:51:28,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:51:28,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:51:28,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:51:28,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:51:28,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:51:28,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:51:28,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:51:28,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:51:28,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:51:28,330 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:51:28,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:51:28,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:51:28,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:51:28,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:51:28,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:51:28,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:51:28,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:51:28,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:51:28,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:51:28,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:51:28,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:51:28,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:51:28,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:51:28,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:51:28,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:51:28,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:51:28,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:51:28,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:51:28,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:51:28,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:51:28,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:51:28,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:51:28,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:51:28,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:51:28,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:51:28,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:51:28,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:51:28,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:51:28,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:51:28,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:51:28,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-27 17:51:28,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b25e0c9c/2c10e69415a14221916fbb57857e1e00/FLAG8f241e5e1 [2020-10-27 17:51:29,932 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:51:29,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label55.c [2020-10-27 17:51:29,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b25e0c9c/2c10e69415a14221916fbb57857e1e00/FLAG8f241e5e1 [2020-10-27 17:51:30,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b25e0c9c/2c10e69415a14221916fbb57857e1e00 [2020-10-27 17:51:30,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:51:30,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:51:30,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:51:30,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:51:30,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:51:30,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:30" (1/1) ... [2020-10-27 17:51:30,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478994f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:30, skipping insertion in model container [2020-10-27 17:51:30,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:51:30" (1/1) ... [2020-10-27 17:51:30,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:51:30,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:51:31,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:51:31,963 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:51:32,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:51:32,637 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:51:32,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32 WrapperNode [2020-10-27 17:51:32,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:51:32,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:51:32,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:51:32,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:51:32,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:32,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:32,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:32,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:32,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:33,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:33,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... [2020-10-27 17:51:33,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:51:33,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:51:33,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:51:33,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:51:33,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:51:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:51:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:51:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:51:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:51:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:51:33,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:51:33,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:51:33,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:51:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:51:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:51:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:51:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:51:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:51:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:51:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:51:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:51:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:51:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:51:33,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:51:33,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:51:33,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:51:39,447 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:51:39,448 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:51:39,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:39 BoogieIcfgContainer [2020-10-27 17:51:39,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:51:39,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:51:39,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:51:39,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:51:39,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:51:30" (1/3) ... [2020-10-27 17:51:39,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3695f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:39, skipping insertion in model container [2020-10-27 17:51:39,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:51:32" (2/3) ... [2020-10-27 17:51:39,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc3695f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:51:39, skipping insertion in model container [2020-10-27 17:51:39,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:51:39" (3/3) ... [2020-10-27 17:51:39,465 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label55.c [2020-10-27 17:51:39,481 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:51:39,489 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:51:39,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:51:39,561 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:51:39,561 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:51:39,561 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:51:39,561 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:51:39,561 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:51:39,562 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:51:39,562 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:51:39,562 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:51:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:51:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 17:51:39,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:39,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:39,628 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -744967124, now seen corresponding path program 1 times [2020-10-27 17:51:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:39,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416234981] [2020-10-27 17:51:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:39,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:40,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:40,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 17:51:40,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-27 17:51:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:51:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:51:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 17:51:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:51:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:40,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:40,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:40,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 17:51:40,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:40,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:51:40,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:40,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416234981] [2020-10-27 17:51:40,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:51:40,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:51:40,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975865364] [2020-10-27 17:51:40,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:51:40,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:40,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:51:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:51:40,663 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:51:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:53,005 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-27 17:51:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:53,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 17:51:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:53,041 INFO L225 Difference]: With dead ends: 2492 [2020-10-27 17:51:53,042 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:51:53,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:51:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-27 17:51:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-27 17:51:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-27 17:51:53,249 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 15 [2020-10-27 17:51:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:53,250 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-27 17:51:53,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:51:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-27 17:51:53,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 17:51:53,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:53,261 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:51:53,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:51:53,262 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:53,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1591770005, now seen corresponding path program 1 times [2020-10-27 17:51:53,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:53,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99434201] [2020-10-27 17:51:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:53,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:54,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 17:51:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-27 17:51:54,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:51:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:51:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 17:51:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:54,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:54,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 17:51:54,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:54,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:54,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:54,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:55,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:55,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:51:55,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 17:51:55,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:51:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:55,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99434201] [2020-10-27 17:51:55,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:55,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:55,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310764610] [2020-10-27 17:51:55,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:55,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:55,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:55,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:55,176 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 5 states. [2020-10-27 17:52:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:08,144 INFO L93 Difference]: Finished difference Result 4684 states and 7505 transitions. [2020-10-27 17:52:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:08,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-27 17:52:08,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:08,172 INFO L225 Difference]: With dead ends: 4684 [2020-10-27 17:52:08,172 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:52:08,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:52:08,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3121. [2020-10-27 17:52:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-27 17:52:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4362 transitions. [2020-10-27 17:52:08,323 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4362 transitions. Word has length 94 [2020-10-27 17:52:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:08,324 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 4362 transitions. [2020-10-27 17:52:08,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4362 transitions. [2020-10-27 17:52:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 17:52:08,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:08,335 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:52:08,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:52:08,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash 356141261, now seen corresponding path program 1 times [2020-10-27 17:52:08,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:08,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891277275] [2020-10-27 17:52:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:09,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 17:52:09,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-27 17:52:09,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 17:52:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:52:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:09,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:09,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:09,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:09,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:09,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:52:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 17:52:09,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:09,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 17:52:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:09,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891277275] [2020-10-27 17:52:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:09,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:09,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549219114] [2020-10-27 17:52:09,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:09,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:09,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:09,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:09,546 INFO L87 Difference]: Start difference. First operand 3121 states and 4362 transitions. Second operand 5 states. [2020-10-27 17:52:22,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:22,947 INFO L93 Difference]: Finished difference Result 9356 states and 13236 transitions. [2020-10-27 17:52:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:22,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-10-27 17:52:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:22,990 INFO L225 Difference]: With dead ends: 9356 [2020-10-27 17:52:22,990 INFO L226 Difference]: Without dead ends: 6241 [2020-10-27 17:52:23,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-27 17:52:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6233. [2020-10-27 17:52:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2020-10-27 17:52:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 8163 transitions. [2020-10-27 17:52:23,203 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 8163 transitions. Word has length 95 [2020-10-27 17:52:23,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:23,204 INFO L481 AbstractCegarLoop]: Abstraction has 6233 states and 8163 transitions. [2020-10-27 17:52:23,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 8163 transitions. [2020-10-27 17:52:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 17:52:23,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:23,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:52:23,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:52:23,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:23,208 INFO L82 PathProgramCache]: Analyzing trace with hash 927293349, now seen corresponding path program 1 times [2020-10-27 17:52:23,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:23,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146963469] [2020-10-27 17:52:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:23,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:24,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:24,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 17:52:24,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:52:24,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-27 17:52:24,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:24,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 17:52:24,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:52:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:24,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:24,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:24,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:52:24,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:24,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:24,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:24,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:24,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:52:24,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 17:52:24,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:52:24,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:24,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146963469] [2020-10-27 17:52:24,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:24,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:24,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48028901] [2020-10-27 17:52:24,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:24,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:24,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:24,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:24,840 INFO L87 Difference]: Start difference. First operand 6233 states and 8163 transitions. Second operand 5 states. [2020-10-27 17:52:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:38,456 INFO L93 Difference]: Finished difference Result 14021 states and 18979 transitions. [2020-10-27 17:52:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:38,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 17:52:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:38,503 INFO L225 Difference]: With dead ends: 14021 [2020-10-27 17:52:38,504 INFO L226 Difference]: Without dead ends: 7794 [2020-10-27 17:52:38,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:38,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7794 states. [2020-10-27 17:52:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7794 to 7786. [2020-10-27 17:52:38,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7786 states. [2020-10-27 17:52:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7786 states to 7786 states and 9938 transitions. [2020-10-27 17:52:38,738 INFO L78 Accepts]: Start accepts. Automaton has 7786 states and 9938 transitions. Word has length 102 [2020-10-27 17:52:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:38,739 INFO L481 AbstractCegarLoop]: Abstraction has 7786 states and 9938 transitions. [2020-10-27 17:52:38,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 7786 states and 9938 transitions. [2020-10-27 17:52:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 17:52:38,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:38,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:38,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:52:38,742 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 433239773, now seen corresponding path program 1 times [2020-10-27 17:52:38,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:38,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368181878] [2020-10-27 17:52:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:38,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:39,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:39,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:52:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-27 17:52:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 17:52:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:52:39,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:52:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:39,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:39,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:52:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:52:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:52:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:39,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368181878] [2020-10-27 17:52:39,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:39,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:39,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708160112] [2020-10-27 17:52:39,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:39,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:39,896 INFO L87 Difference]: Start difference. First operand 7786 states and 9938 transitions. Second operand 5 states. [2020-10-27 17:52:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:56,325 INFO L93 Difference]: Finished difference Result 23344 states and 30390 transitions. [2020-10-27 17:52:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:56,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 17:52:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:56,404 INFO L225 Difference]: With dead ends: 23344 [2020-10-27 17:52:56,404 INFO L226 Difference]: Without dead ends: 15564 [2020-10-27 17:52:56,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2020-10-27 17:52:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 14022. [2020-10-27 17:52:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14022 states. [2020-10-27 17:52:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14022 states to 14022 states and 18060 transitions. [2020-10-27 17:52:56,950 INFO L78 Accepts]: Start accepts. Automaton has 14022 states and 18060 transitions. Word has length 103 [2020-10-27 17:52:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:56,951 INFO L481 AbstractCegarLoop]: Abstraction has 14022 states and 18060 transitions. [2020-10-27 17:52:56,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 14022 states and 18060 transitions. [2020-10-27 17:52:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 17:52:56,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:56,954 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:52:56,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:52:56,956 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:56,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1006975451, now seen corresponding path program 1 times [2020-10-27 17:52:56,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:56,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114620830] [2020-10-27 17:52:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:57,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 17:52:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 895 [2020-10-27 17:52:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-10-27 17:52:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:52:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:58,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:58,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:58,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:58,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:58,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:58,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:52:58,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:58,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:52:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 17:52:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:52:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:58,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114620830] [2020-10-27 17:52:58,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:58,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:58,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436320325] [2020-10-27 17:52:58,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:58,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:58,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:58,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:58,358 INFO L87 Difference]: Start difference. First operand 14022 states and 18060 transitions. Second operand 5 states. [2020-10-27 17:53:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:13,960 INFO L93 Difference]: Finished difference Result 34235 states and 45608 transitions. [2020-10-27 17:53:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:13,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 17:53:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:14,038 INFO L225 Difference]: With dead ends: 34235 [2020-10-27 17:53:14,038 INFO L226 Difference]: Without dead ends: 20219 [2020-10-27 17:53:14,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20219 states. [2020-10-27 17:53:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20219 to 20207. [2020-10-27 17:53:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20207 states. [2020-10-27 17:53:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20207 states to 20207 states and 25271 transitions. [2020-10-27 17:53:14,695 INFO L78 Accepts]: Start accepts. Automaton has 20207 states and 25271 transitions. Word has length 139 [2020-10-27 17:53:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:14,696 INFO L481 AbstractCegarLoop]: Abstraction has 20207 states and 25271 transitions. [2020-10-27 17:53:14,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 20207 states and 25271 transitions. [2020-10-27 17:53:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 17:53:14,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:14,703 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:53:14,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:53:14,703 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1961057561, now seen corresponding path program 1 times [2020-10-27 17:53:14,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:14,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031598118] [2020-10-27 17:53:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:15,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:15,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 17:53:15,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:53:15,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-27 17:53:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:53:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 17:53:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:53:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:15,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:15,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:15,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:53:15,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:15,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:15,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:15,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:15,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 17:53:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 17:53:15,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 17:53:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:53:15,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031598118] [2020-10-27 17:53:15,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:15,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:53:15,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142323663] [2020-10-27 17:53:15,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:53:15,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:15,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:53:15,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:53:15,942 INFO L87 Difference]: Start difference. First operand 20207 states and 25271 transitions. Second operand 5 states. [2020-10-27 17:53:16,150 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:53:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:32,472 INFO L93 Difference]: Finished difference Result 55903 states and 71953 transitions. [2020-10-27 17:53:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:32,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 17:53:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:32,609 INFO L225 Difference]: With dead ends: 55903 [2020-10-27 17:53:32,609 INFO L226 Difference]: Without dead ends: 35702 [2020-10-27 17:53:32,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:32,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35702 states. [2020-10-27 17:53:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35702 to 34927. [2020-10-27 17:53:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34927 states. [2020-10-27 17:53:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34927 states to 34927 states and 42582 transitions. [2020-10-27 17:53:33,442 INFO L78 Accepts]: Start accepts. Automaton has 34927 states and 42582 transitions. Word has length 160 [2020-10-27 17:53:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:33,443 INFO L481 AbstractCegarLoop]: Abstraction has 34927 states and 42582 transitions. [2020-10-27 17:53:33,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:33,443 INFO L276 IsEmpty]: Start isEmpty. Operand 34927 states and 42582 transitions. [2020-10-27 17:53:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 17:53:33,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:33,451 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:53:33,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:53:33,451 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:33,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:33,452 INFO L82 PathProgramCache]: Analyzing trace with hash -235396520, now seen corresponding path program 1 times [2020-10-27 17:53:33,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:33,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307411611] [2020-10-27 17:53:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:38,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:38,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-27 17:53:38,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:53:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 17:53:38,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:53:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-27 17:53:38,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:53:38,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:53:39,085 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:53:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:39,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:39,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:39,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:39,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:53:39,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:39,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:53:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:39,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:39,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:39,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 17:53:39,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:39,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 17:53:39,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:39,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:39,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:39,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:53:39,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 17:53:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:39,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:39,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 17:53:39,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:39,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 17:53:39,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 17:53:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:53:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 17:53:39,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307411611] [2020-10-27 17:53:39,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:39,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:53:39,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511120343] [2020-10-27 17:53:39,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:53:39,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:53:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:53:39,668 INFO L87 Difference]: Start difference. First operand 34927 states and 42582 transitions. Second operand 5 states. [2020-10-27 17:53:39,803 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:53:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:57,214 INFO L93 Difference]: Finished difference Result 88434 states and 111337 transitions. [2020-10-27 17:53:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:53:57,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 17:53:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:57,451 INFO L225 Difference]: With dead ends: 88434 [2020-10-27 17:53:57,452 INFO L226 Difference]: Without dead ends: 53513 [2020-10-27 17:53:57,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:53:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53513 states. [2020-10-27 17:53:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53513 to 53505. [2020-10-27 17:53:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53505 states. [2020-10-27 17:53:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53505 states to 53505 states and 66253 transitions. [2020-10-27 17:53:58,760 INFO L78 Accepts]: Start accepts. Automaton has 53505 states and 66253 transitions. Word has length 223 [2020-10-27 17:53:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:58,761 INFO L481 AbstractCegarLoop]: Abstraction has 53505 states and 66253 transitions. [2020-10-27 17:53:58,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:53:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 53505 states and 66253 transitions. [2020-10-27 17:53:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-27 17:53:58,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:58,780 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:53:58,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:53:58,781 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash 335971141, now seen corresponding path program 1 times [2020-10-27 17:53:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:58,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340267395] [2020-10-27 17:53:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:59,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:01,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-27 17:54:01,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:54:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2621 [2020-10-27 17:54:01,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:54:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-27 17:54:01,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:54:01,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:01,766 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:54:01,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:54:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:01,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:54:01,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:54:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:54:01,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:54:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-27 17:54:02,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-27 17:54:02,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:54:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:02,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 17:54:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:54:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:54:02,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340267395] [2020-10-27 17:54:02,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:54:02,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:54:02,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537619058] [2020-10-27 17:54:02,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:54:02,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:54:02,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:54:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:54:02,556 INFO L87 Difference]: Start difference. First operand 53505 states and 66253 transitions. Second operand 5 states. [2020-10-27 17:54:03,245 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:54:22,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:54:22,382 INFO L93 Difference]: Finished difference Result 128677 states and 164341 transitions. [2020-10-27 17:54:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:54:22,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 283 [2020-10-27 17:54:22,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:54:22,884 INFO L225 Difference]: With dead ends: 128677 [2020-10-27 17:54:22,884 INFO L226 Difference]: Without dead ends: 75178 [2020-10-27 17:54:23,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:54:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75178 states. [2020-10-27 17:54:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75178 to 73631. [2020-10-27 17:54:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73631 states. [2020-10-27 17:54:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73631 states to 73631 states and 91030 transitions. [2020-10-27 17:54:25,106 INFO L78 Accepts]: Start accepts. Automaton has 73631 states and 91030 transitions. Word has length 283 [2020-10-27 17:54:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:54:25,107 INFO L481 AbstractCegarLoop]: Abstraction has 73631 states and 91030 transitions. [2020-10-27 17:54:25,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:54:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 73631 states and 91030 transitions. [2020-10-27 17:54:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-27 17:54:25,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:54:25,146 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:54:25,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:54:25,147 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:54:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:54:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1804305904, now seen corresponding path program 1 times [2020-10-27 17:54:25,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:54:25,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273594930] [2020-10-27 17:54:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:54:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:25,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:30,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:30,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-27 17:54:30,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:54:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 17:54:30,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:30,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:54:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 376 [2020-10-27 17:54:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:54:30,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:30,625 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:54:30,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:54:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:30,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:30,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:54:30,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:30,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:54:30,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:30,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:30,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:30,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:30,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:30,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:54:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 17:54:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 17:54:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:54:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:54:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:30,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 17:54:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:54:31,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:54:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:54:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 17:54:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:54:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:54:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:54:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 17:54:31,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:54:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2020-10-27 17:54:31,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273594930] [2020-10-27 17:54:31,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:54:31,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:54:31,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255979054] [2020-10-27 17:54:31,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:54:31,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:54:31,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:54:31,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:54:31,445 INFO L87 Difference]: Start difference. First operand 73631 states and 91030 transitions. Second operand 5 states. [2020-10-27 17:54:32,254 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:54:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:54:52,563 INFO L93 Difference]: Finished difference Result 167383 states and 210983 transitions. [2020-10-27 17:54:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:54:52,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 379 [2020-10-27 17:54:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:54:53,200 INFO L225 Difference]: With dead ends: 167383 [2020-10-27 17:54:53,201 INFO L226 Difference]: Without dead ends: 93758 [2020-10-27 17:54:53,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:54:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93758 states. [2020-10-27 17:54:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93758 to 87608. [2020-10-27 17:54:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87608 states. [2020-10-27 17:54:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87608 states to 87608 states and 106368 transitions. [2020-10-27 17:54:55,995 INFO L78 Accepts]: Start accepts. Automaton has 87608 states and 106368 transitions. Word has length 379 [2020-10-27 17:54:55,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:54:55,996 INFO L481 AbstractCegarLoop]: Abstraction has 87608 states and 106368 transitions. [2020-10-27 17:54:55,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:54:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 87608 states and 106368 transitions. [2020-10-27 17:54:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2020-10-27 17:54:56,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:54:56,206 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:54:56,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:54:56,206 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:54:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:54:56,207 INFO L82 PathProgramCache]: Analyzing trace with hash 643844715, now seen corresponding path program 1 times [2020-10-27 17:54:56,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:54:56,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982542501] [2020-10-27 17:54:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:54:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:54:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:57,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:54:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:55:01,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:55:01,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 862 [2020-10-27 17:55:01,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:55:01,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 17:55:01,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:55:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 17:55:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-27 17:55:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 469 [2020-10-27 17:55:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:55:02,150 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-10-27 17:55:02,274 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:55:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:55:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:55:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:55:02,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:55:02,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:55:02,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:55:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:55:02,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:55:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:55:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:55:02,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:55:02,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:55:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:55:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:55:02,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:55:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:55:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:55:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:55:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 17:55:02,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:55:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:55:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:55:02,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:55:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:55:02,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:55:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:55:02,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:55:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:55:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 17:55:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:55:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 17:55:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:55:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:55:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:55:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 17:55:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:55:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-27 17:55:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:55:02,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:55:03,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking...