/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_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:42:17,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:42:17,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:42:17,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:42:17,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:42:17,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:42:17,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:42:17,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:42:17,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:42:17,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:42:17,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:42:17,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:42:17,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:42:17,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:42:17,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:42:17,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:42:17,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:42:17,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:42:17,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:42:17,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:42:17,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:42:17,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:42:17,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:42:17,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:42:17,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:42:17,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:42:17,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:42:17,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:42:17,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:42:17,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:42:17,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:42:17,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:42:17,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:42:17,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:42:17,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:42:17,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:42:17,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:42:17,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:42:17,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:42:17,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:42:17,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:42:17,326 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 17:42:17,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:42:17,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:42:17,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:42:17,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:42:17,410 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:42:17,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:42:17,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:42:17,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:42:17,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:42:17,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:42:17,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:42:17,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:42:17,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:42:17,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:42:17,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:42:17,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:42:17,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:42:17,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:42:17,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:42:17,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:42:17,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:42:17,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:42:17,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:42:17,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:42:17,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:42:17,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:42:17,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:42:17,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:42:17,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:42:17,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:42:17,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:42:17,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:42:17,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:42:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:42:17,989 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:42:17,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2020-10-27 17:42:18,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b2a9f3c/1ebb4bce81a94804806ef74c172be9df/FLAG981332c76 [2020-10-27 17:42:19,198 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:42:19,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label19.c [2020-10-27 17:42:19,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b2a9f3c/1ebb4bce81a94804806ef74c172be9df/FLAG981332c76 [2020-10-27 17:42:19,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63b2a9f3c/1ebb4bce81a94804806ef74c172be9df [2020-10-27 17:42:19,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:42:19,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:42:19,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:19,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:42:19,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:42:19,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:19" (1/1) ... [2020-10-27 17:42:19,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0b7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:19, skipping insertion in model container [2020-10-27 17:42:19,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:19" (1/1) ... [2020-10-27 17:42:19,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:42:19,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:42:21,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:21,573 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:42:22,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:22,661 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:42:22,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22 WrapperNode [2020-10-27 17:42:22,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:22,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:42:22,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:42:22,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:42:22,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (1/1) ... [2020-10-27 17:42:22,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:42:22,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:42:22,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:42:22,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:42:22,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (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 17:42:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:42:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:42:23,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:42:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:42:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:42:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:42:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:42:23,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:42:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:42:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:42:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:42:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:42:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:42:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:42:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:42:30,489 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:42:30,490 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:42:30,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:30 BoogieIcfgContainer [2020-10-27 17:42:30,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:42:30,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:42:30,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:42:30,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:42:30,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:19" (1/3) ... [2020-10-27 17:42:30,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:30, skipping insertion in model container [2020-10-27 17:42:30,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:22" (2/3) ... [2020-10-27 17:42:30,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5d4e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:30, skipping insertion in model container [2020-10-27 17:42:30,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:30" (3/3) ... [2020-10-27 17:42:30,512 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label19.c [2020-10-27 17:42:30,528 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:42:30,537 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:42:30,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:42:30,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:42:30,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:42:30,586 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:42:30,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:42:30,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:42:30,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:42:30,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:42:30,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:42:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:42:30,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 17:42:30,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:30,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:42:30,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:30,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1153092, now seen corresponding path program 1 times [2020-10-27 17:42:30,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:30,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625720844] [2020-10-27 17:42:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:31,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:31,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 17:42:31,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:31,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-27 17:42:31,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:31,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:42:31,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 17:42:31,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:42:31,598 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:42:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:31,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:42:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:42:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:31,731 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 17:42:31,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625720844] [2020-10-27 17:42:31,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:42:31,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:42:31,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786627068] [2020-10-27 17:42:31,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:42:31,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:42:31,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:42:31,769 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:42:32,020 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:42:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:42:43,846 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:42:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:42:43,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-27 17:42:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:42:43,886 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:42:43,886 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:42:43,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:43,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:42:44,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:42:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:42:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-27 17:42:44,094 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 21 [2020-10-27 17:42:44,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:42:44,094 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-27 17:42:44,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:42:44,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-27 17:42:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 17:42:44,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:44,099 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:42:44,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:42:44,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash -833261959, now seen corresponding path program 1 times [2020-10-27 17:42:44,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:44,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175078149] [2020-10-27 17:42:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:45,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:45,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 17:42:45,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:42:45,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1224 [2020-10-27 17:42:45,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:42:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 17:42:45,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:42:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:42:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:45,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:45,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:45,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:45,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:45,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:42:45,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:45,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:42:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:45,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:42:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:42:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:45,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:45,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:42:45,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 17:42:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:45,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175078149] [2020-10-27 17:42:45,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:42:45,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:42:45,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199955583] [2020-10-27 17:42:45,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:42:45,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:42:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:42:45,689 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 5 states. [2020-10-27 17:43:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:03,635 INFO L93 Difference]: Finished difference Result 4677 states and 8272 transitions. [2020-10-27 17:43:03,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:03,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-27 17:43:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:03,664 INFO L225 Difference]: With dead ends: 4677 [2020-10-27 17:43:03,664 INFO L226 Difference]: Without dead ends: 3129 [2020-10-27 17:43:03,670 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 17:43:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2020-10-27 17:43:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3112. [2020-10-27 17:43:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-27 17:43:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4908 transitions. [2020-10-27 17:43:03,798 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4908 transitions. Word has length 90 [2020-10-27 17:43:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:03,799 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4908 transitions. [2020-10-27 17:43:03,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4908 transitions. [2020-10-27 17:43:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 17:43:03,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:03,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:03,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:43:03,814 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash -813606415, now seen corresponding path program 1 times [2020-10-27 17:43:03,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:03,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606577647] [2020-10-27 17:43:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:04,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 17:43:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:43:04,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:43:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:05,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:05,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:05,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:05,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:05,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 17:43:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 17:43:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 17:43:05,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:05,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606577647] [2020-10-27 17:43:05,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:05,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:05,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612687386] [2020-10-27 17:43:05,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:05,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:05,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:05,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:05,160 INFO L87 Difference]: Start difference. First operand 3112 states and 4908 transitions. Second operand 5 states. [2020-10-27 17:43:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:18,953 INFO L93 Difference]: Finished difference Result 9348 states and 14965 transitions. [2020-10-27 17:43:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:18,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-27 17:43:18,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:18,996 INFO L225 Difference]: With dead ends: 9348 [2020-10-27 17:43:18,996 INFO L226 Difference]: Without dead ends: 6242 [2020-10-27 17:43:19,005 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 17:43:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2020-10-27 17:43:19,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 6230. [2020-10-27 17:43:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2020-10-27 17:43:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 8866 transitions. [2020-10-27 17:43:19,209 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 8866 transitions. Word has length 91 [2020-10-27 17:43:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:19,211 INFO L481 AbstractCegarLoop]: Abstraction has 6230 states and 8866 transitions. [2020-10-27 17:43:19,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 8866 transitions. [2020-10-27 17:43:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-27 17:43:19,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:19,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:19,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:43:19,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash 712795261, now seen corresponding path program 1 times [2020-10-27 17:43:19,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:19,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304201149] [2020-10-27 17:43:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:19,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:20,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:20,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:43:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:20,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 808 [2020-10-27 17:43:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 17:43:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:43:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:20,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:20,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:20,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:20,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:20,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:20,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:20,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:43:20,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:43:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:20,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304201149] [2020-10-27 17:43:20,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:20,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:43:20,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113472878] [2020-10-27 17:43:20,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:43:20,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:20,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:43:20,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:20,432 INFO L87 Difference]: Start difference. First operand 6230 states and 8866 transitions. Second operand 6 states. [2020-10-27 17:43:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:38,794 INFO L93 Difference]: Finished difference Result 17157 states and 26039 transitions. [2020-10-27 17:43:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:43:38,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-27 17:43:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:38,866 INFO L225 Difference]: With dead ends: 17157 [2020-10-27 17:43:38,866 INFO L226 Difference]: Without dead ends: 10933 [2020-10-27 17:43:38,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:43:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10933 states. [2020-10-27 17:43:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 10917. [2020-10-27 17:43:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10917 states. [2020-10-27 17:43:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10917 states to 10917 states and 15903 transitions. [2020-10-27 17:43:39,293 INFO L78 Accepts]: Start accepts. Automaton has 10917 states and 15903 transitions. Word has length 92 [2020-10-27 17:43:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:39,295 INFO L481 AbstractCegarLoop]: Abstraction has 10917 states and 15903 transitions. [2020-10-27 17:43:39,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:43:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 10917 states and 15903 transitions. [2020-10-27 17:43:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 17:43:39,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:39,298 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:43:39,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:43:39,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1339442365, now seen corresponding path program 1 times [2020-10-27 17:43:39,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:39,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064364016] [2020-10-27 17:43:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:39,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:39,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:40,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 17:43:40,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:43:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:40,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:40,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:40,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:43:40,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:40,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:40,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:40,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:40,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:40,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:40,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:40,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:43:40,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:40,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064364016] [2020-10-27 17:43:40,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:40,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:40,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439816712] [2020-10-27 17:43:40,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:40,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:40,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:40,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:40,673 INFO L87 Difference]: Start difference. First operand 10917 states and 15903 transitions. Second operand 5 states. [2020-10-27 17:43:57,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:57,549 INFO L93 Difference]: Finished difference Result 31914 states and 47535 transitions. [2020-10-27 17:43:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:57,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 17:43:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:57,637 INFO L225 Difference]: With dead ends: 31914 [2020-10-27 17:43:57,637 INFO L226 Difference]: Without dead ends: 21003 [2020-10-27 17:43:57,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 17:43:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21003 states. [2020-10-27 17:43:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21003 to 20995. [2020-10-27 17:43:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20995 states. [2020-10-27 17:43:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20995 states to 20995 states and 28108 transitions. [2020-10-27 17:43:58,247 INFO L78 Accepts]: Start accepts. Automaton has 20995 states and 28108 transitions. Word has length 124 [2020-10-27 17:43:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:58,247 INFO L481 AbstractCegarLoop]: Abstraction has 20995 states and 28108 transitions. [2020-10-27 17:43:58,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 20995 states and 28108 transitions. [2020-10-27 17:43:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 17:43:58,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:58,255 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:43:58,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:43:58,255 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:58,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:58,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1298060217, now seen corresponding path program 1 times [2020-10-27 17:43:58,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:58,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432716789] [2020-10-27 17:43:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:59,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 17:43:59,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1666 [2020-10-27 17:43:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 17:43:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:43:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:00,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:44:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:00,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:00,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 17:44:00,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:00,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 17:44:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:00,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:44:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:00,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432716789] [2020-10-27 17:44:00,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:00,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:00,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3897622] [2020-10-27 17:44:00,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:00,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:00,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:00,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:00,649 INFO L87 Difference]: Start difference. First operand 20995 states and 28108 transitions. Second operand 5 states. [2020-10-27 17:44:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:18,238 INFO L93 Difference]: Finished difference Result 47417 states and 65838 transitions. [2020-10-27 17:44:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:18,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-10-27 17:44:18,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:18,349 INFO L225 Difference]: With dead ends: 47417 [2020-10-27 17:44:18,349 INFO L226 Difference]: Without dead ends: 26428 [2020-10-27 17:44:18,402 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 17:44:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26428 states. [2020-10-27 17:44:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26428 to 26420. [2020-10-27 17:44:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26420 states. [2020-10-27 17:44:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26420 states to 26420 states and 34572 transitions. [2020-10-27 17:44:19,126 INFO L78 Accepts]: Start accepts. Automaton has 26420 states and 34572 transitions. Word has length 191 [2020-10-27 17:44:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:19,127 INFO L481 AbstractCegarLoop]: Abstraction has 26420 states and 34572 transitions. [2020-10-27 17:44:19,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:19,127 INFO L276 IsEmpty]: Start isEmpty. Operand 26420 states and 34572 transitions. [2020-10-27 17:44:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 17:44:19,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:19,142 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:44:19,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:44:19,142 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:19,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:19,143 INFO L82 PathProgramCache]: Analyzing trace with hash 109824654, now seen corresponding path program 1 times [2020-10-27 17:44:19,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:19,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023291383] [2020-10-27 17:44:19,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:19,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:19,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:24,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:24,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:24,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 17:44:24,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:44:24,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 17:44:24,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-27 17:44:24,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:44:24,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:24,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:24,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:24,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 17:44:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:24,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:24,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:44:24,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:44:24,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023291383] [2020-10-27 17:44:24,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:24,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:24,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571308233] [2020-10-27 17:44:24,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:24,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:24,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:24,850 INFO L87 Difference]: Start difference. First operand 26420 states and 34572 transitions. Second operand 5 states. [2020-10-27 17:44:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:45,012 INFO L93 Difference]: Finished difference Result 59809 states and 80849 transitions. [2020-10-27 17:44:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:45,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-27 17:44:45,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:45,153 INFO L225 Difference]: With dead ends: 59809 [2020-10-27 17:44:45,153 INFO L226 Difference]: Without dead ends: 33395 [2020-10-27 17:44:45,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 17:44:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33395 states. [2020-10-27 17:44:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33395 to 33383. [2020-10-27 17:44:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33383 states. [2020-10-27 17:44:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33383 states to 33383 states and 42848 transitions. [2020-10-27 17:44:46,115 INFO L78 Accepts]: Start accepts. Automaton has 33383 states and 42848 transitions. Word has length 217 [2020-10-27 17:44:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:46,116 INFO L481 AbstractCegarLoop]: Abstraction has 33383 states and 42848 transitions. [2020-10-27 17:44:46,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33383 states and 42848 transitions. [2020-10-27 17:44:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-27 17:44:46,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:46,130 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:44:46,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:44:46,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1853434467, now seen corresponding path program 1 times [2020-10-27 17:44:46,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:46,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937947911] [2020-10-27 17:44:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:47,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:47,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 17:44:47,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:44:47,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-10-27 17:44:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:44:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:44:47,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-27 17:44:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:47,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:47,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:47,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:47,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 17:44:47,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:47,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:44:47,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:47,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:47,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:44:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-27 17:44:48,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:44:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 17:44:48,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:44:48,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937947911] [2020-10-27 17:44:48,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:44:48,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 17:44:48,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210452696] [2020-10-27 17:44:48,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:44:48,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:48,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:44:48,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:44:48,696 INFO L87 Difference]: Start difference. First operand 33383 states and 42848 transitions. Second operand 7 states. [2020-10-27 17:44:48,847 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:45:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:13,700 INFO L93 Difference]: Finished difference Result 78064 states and 106401 transitions. [2020-10-27 17:45:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:45:13,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-27 17:45:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:13,904 INFO L225 Difference]: With dead ends: 78064 [2020-10-27 17:45:13,904 INFO L226 Difference]: Without dead ends: 44687 [2020-10-27 17:45:13,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:45:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44687 states. [2020-10-27 17:45:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44687 to 44513. [2020-10-27 17:45:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44513 states. [2020-10-27 17:45:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44513 states to 44513 states and 57206 transitions. [2020-10-27 17:45:15,571 INFO L78 Accepts]: Start accepts. Automaton has 44513 states and 57206 transitions. Word has length 236 [2020-10-27 17:45:15,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:15,571 INFO L481 AbstractCegarLoop]: Abstraction has 44513 states and 57206 transitions. [2020-10-27 17:45:15,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:45:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 44513 states and 57206 transitions. [2020-10-27 17:45:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-27 17:45:15,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:15,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:45:15,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:45:15,610 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:15,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:15,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1492514047, now seen corresponding path program 1 times [2020-10-27 17:45:15,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:15,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567051209] [2020-10-27 17:45:15,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-27 17:45:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 17:45:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:20,946 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:45:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:20,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 17:45:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:21,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:45:21,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:45:21,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:21,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:45:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:21,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:21,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:45:21,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:45:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:21,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:45:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:21,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:21,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:45:21,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:21,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-27 17:45:21,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:21,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:21,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:45:21,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-27 17:45:21,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:45:22,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567051209] [2020-10-27 17:45:22,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:22,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:45:22,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752237105] [2020-10-27 17:45:22,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:45:22,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:22,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:45:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:45:22,091 INFO L87 Difference]: Start difference. First operand 44513 states and 57206 transitions. Second operand 7 states. [2020-10-27 17:45:23,143 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:45:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:58,387 INFO L93 Difference]: Finished difference Result 109919 states and 147784 transitions. [2020-10-27 17:45:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:45:58,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 384 [2020-10-27 17:45:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:58,907 INFO L225 Difference]: With dead ends: 109919 [2020-10-27 17:45:58,907 INFO L226 Difference]: Without dead ends: 65412 [2020-10-27 17:45:59,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:45:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65412 states. [2020-10-27 17:46:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65412 to 64541. [2020-10-27 17:46:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64541 states. [2020-10-27 17:46:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64541 states to 64541 states and 82539 transitions. [2020-10-27 17:46:01,429 INFO L78 Accepts]: Start accepts. Automaton has 64541 states and 82539 transitions. Word has length 384 [2020-10-27 17:46:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:01,430 INFO L481 AbstractCegarLoop]: Abstraction has 64541 states and 82539 transitions. [2020-10-27 17:46:01,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:46:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 64541 states and 82539 transitions. [2020-10-27 17:46:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-27 17:46:01,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:01,601 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:46:01,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:46:01,602 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:01,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2020700145, now seen corresponding path program 1 times [2020-10-27 17:46:01,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:01,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630358316] [2020-10-27 17:46:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:01,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking...