/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:35:07,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:35:07,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:35:07,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:35:07,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:35:07,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:35:07,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:35:07,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:35:07,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:35:07,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:35:07,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:35:07,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:35:07,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:35:07,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:35:07,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:35:07,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:35:07,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:35:07,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:35:07,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:35:07,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:35:07,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:35:07,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:35:07,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:35:07,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:35:07,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:35:07,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:35:07,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:35:07,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:35:07,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:35:07,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:35:07,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:35:07,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:35:07,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:35:07,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:35:07,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:35:07,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:35:07,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:35:07,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:35:07,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:35:07,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:35:07,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:35:07,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:35:08,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:35:08,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:35:08,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:35:08,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:35:08,012 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:35:08,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:35:08,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:35:08,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:35:08,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:35:08,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:35:08,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:35:08,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:35:08,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:35:08,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:35:08,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:35:08,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:35:08,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:35:08,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:35:08,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:35:08,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:35:08,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:35:08,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:35:08,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:35:08,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:35:08,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:35:08,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:35:08,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:35:08,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:35:08,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:35:08,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:35:08,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:35:08,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:35:08,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:35:08,507 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:35:08,507 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:35:08,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-26 23:35:08,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2c3f0371/27c6c5d55b124f19b42368473cd172d4/FLAG54c87c077 [2020-10-26 23:35:09,534 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:35:09,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label05.c [2020-10-26 23:35:09,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2c3f0371/27c6c5d55b124f19b42368473cd172d4/FLAG54c87c077 [2020-10-26 23:35:09,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2c3f0371/27c6c5d55b124f19b42368473cd172d4 [2020-10-26 23:35:09,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:35:09,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:35:09,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:35:09,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:35:09,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:35:09,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:35:09" (1/1) ... [2020-10-26 23:35:09,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278f9415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:09, skipping insertion in model container [2020-10-26 23:35:09,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:35:09" (1/1) ... [2020-10-26 23:35:09,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:35:09,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:35:10,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:35:10,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:35:11,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:35:11,132 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:35:11,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11 WrapperNode [2020-10-26 23:35:11,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:35:11,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:35:11,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:35:11,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:35:11,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... [2020-10-26 23:35:11,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:35:11,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:35:11,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:35:11,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:35:11,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:35:11,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:35:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:35:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:35:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:35:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:35:11,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:35:11,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:35:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:35:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:35:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:35:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:35:11,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:35:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:35:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:35:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:35:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:35:14,483 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:35:14,484 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:35:14,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:35:14 BoogieIcfgContainer [2020-10-26 23:35:14,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:35:14,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:35:14,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:35:14,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:35:14,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:35:09" (1/3) ... [2020-10-26 23:35:14,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4dc93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:35:14, skipping insertion in model container [2020-10-26 23:35:14,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:35:11" (2/3) ... [2020-10-26 23:35:14,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4dc93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:35:14, skipping insertion in model container [2020-10-26 23:35:14,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:35:14" (3/3) ... [2020-10-26 23:35:14,496 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label05.c [2020-10-26 23:35:14,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:35:14,515 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:35:14,530 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:35:14,562 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:35:14,562 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:35:14,562 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:35:14,563 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:35:14,563 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:35:14,563 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:35:14,563 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:35:14,563 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:35:14,592 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:35:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-26 23:35:14,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:14,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:14,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:14,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1575287431, now seen corresponding path program 1 times [2020-10-26 23:35:14,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:14,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481580110] [2020-10-26 23:35:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:15,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:15,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:35:15,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:15,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-26 23:35:15,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 23:35:15,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:35:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:15,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:15,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:15,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:15,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:15,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:35:15,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:15,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481580110] [2020-10-26 23:35:15,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:15,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 23:35:15,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978342570] [2020-10-26 23:35:15,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:35:15,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:35:15,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:35:15,821 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 5 states. [2020-10-26 23:35:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:24,805 INFO L93 Difference]: Finished difference Result 1522 states and 2792 transitions. [2020-10-26 23:35:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:35:24,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-26 23:35:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:24,835 INFO L225 Difference]: With dead ends: 1522 [2020-10-26 23:35:24,835 INFO L226 Difference]: Without dead ends: 1011 [2020-10-26 23:35:24,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:24,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-26 23:35:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1001. [2020-10-26 23:35:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2020-10-26 23:35:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1379 transitions. [2020-10-26 23:35:25,008 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1379 transitions. Word has length 71 [2020-10-26 23:35:25,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:25,009 INFO L481 AbstractCegarLoop]: Abstraction has 1001 states and 1379 transitions. [2020-10-26 23:35:25,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:35:25,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1379 transitions. [2020-10-26 23:35:25,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 23:35:25,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:25,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:25,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:35:25,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2006284399, now seen corresponding path program 1 times [2020-10-26 23:35:25,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:25,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643101613] [2020-10-26 23:35:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:35:29,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4517 [2020-10-26 23:35:29,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:35:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:35:29,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:29,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:29,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:35:29,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:29,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:35:29,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:30,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:35:30,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 23:35:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:35:30,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:30,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643101613] [2020-10-26 23:35:30,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:30,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:35:30,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673664682] [2020-10-26 23:35:30,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:30,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:30,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:30,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:30,252 INFO L87 Difference]: Start difference. First operand 1001 states and 1379 transitions. Second operand 7 states. [2020-10-26 23:35:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:36,997 INFO L93 Difference]: Finished difference Result 2336 states and 3158 transitions. [2020-10-26 23:35:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:35:37,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-26 23:35:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:37,009 INFO L225 Difference]: With dead ends: 2336 [2020-10-26 23:35:37,009 INFO L226 Difference]: Without dead ends: 1341 [2020-10-26 23:35:37,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:35:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-26 23:35:37,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1324. [2020-10-26 23:35:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-26 23:35:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1734 transitions. [2020-10-26 23:35:37,082 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1734 transitions. Word has length 140 [2020-10-26 23:35:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:37,083 INFO L481 AbstractCegarLoop]: Abstraction has 1324 states and 1734 transitions. [2020-10-26 23:35:37,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1734 transitions. [2020-10-26 23:35:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 23:35:37,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:37,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:37,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:35:37,087 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1979198391, now seen corresponding path program 1 times [2020-10-26 23:35:37,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:37,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361334732] [2020-10-26 23:35:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:37,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:38,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:35:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:38,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:38,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:38,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:38,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:38,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:35:38,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:38,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:35:38,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:38,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:35:38,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:39,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361334732] [2020-10-26 23:35:39,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:39,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:35:39,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45792089] [2020-10-26 23:35:39,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:39,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:39,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:39,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:39,059 INFO L87 Difference]: Start difference. First operand 1324 states and 1734 transitions. Second operand 7 states. [2020-10-26 23:35:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:46,427 INFO L93 Difference]: Finished difference Result 3009 states and 4139 transitions. [2020-10-26 23:35:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:35:46,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-26 23:35:46,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:46,440 INFO L225 Difference]: With dead ends: 3009 [2020-10-26 23:35:46,440 INFO L226 Difference]: Without dead ends: 1998 [2020-10-26 23:35:46,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:35:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2020-10-26 23:35:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1956. [2020-10-26 23:35:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1956 states. [2020-10-26 23:35:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2425 transitions. [2020-10-26 23:35:46,507 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2425 transitions. Word has length 145 [2020-10-26 23:35:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:46,507 INFO L481 AbstractCegarLoop]: Abstraction has 1956 states and 2425 transitions. [2020-10-26 23:35:46,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2425 transitions. [2020-10-26 23:35:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-26 23:35:46,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:46,513 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:35:46,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:35:46,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:46,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:46,514 INFO L82 PathProgramCache]: Analyzing trace with hash -171097408, now seen corresponding path program 1 times [2020-10-26 23:35:46,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:46,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231862139] [2020-10-26 23:35:46,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:48,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:49,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-26 23:35:51,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:35:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4517 [2020-10-26 23:35:51,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:35:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-26 23:35:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:51,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:35:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:51,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:51,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:35:51,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:51,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 23:35:51,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:51,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:51,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:35:51,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:35:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:51,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:52,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:35:52,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-26 23:35:52,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:35:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:35:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 59 proven. 142 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:35:52,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231862139] [2020-10-26 23:35:52,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:35:52,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473221466] [2020-10-26 23:35:52,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:35:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:52,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:35:52,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:35:52,933 INFO L87 Difference]: Start difference. First operand 1956 states and 2425 transitions. Second operand 12 states. [2020-10-26 23:35:53,713 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-10-26 23:35:54,182 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2020-10-26 23:35:55,580 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:35:56,289 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-26 23:35:56,563 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:35:56,889 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-26 23:35:57,307 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-26 23:35:58,847 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2020-10-26 23:35:59,376 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-26 23:36:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:14,605 INFO L93 Difference]: Finished difference Result 4440 states and 5795 transitions. [2020-10-26 23:36:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-26 23:36:14,610 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 245 [2020-10-26 23:36:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:14,632 INFO L225 Difference]: With dead ends: 4440 [2020-10-26 23:36:14,632 INFO L226 Difference]: Without dead ends: 3108 [2020-10-26 23:36:14,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 23:36:14,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-10-26 23:36:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2922. [2020-10-26 23:36:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2020-10-26 23:36:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 3659 transitions. [2020-10-26 23:36:14,769 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 3659 transitions. Word has length 245 [2020-10-26 23:36:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:14,771 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 3659 transitions. [2020-10-26 23:36:14,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:36:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 3659 transitions. [2020-10-26 23:36:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-26 23:36:14,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:14,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:14,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:36:14,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1915466862, now seen corresponding path program 1 times [2020-10-26 23:36:14,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:14,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271991190] [2020-10-26 23:36:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:15,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:19,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-26 23:36:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:36:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-26 23:36:19,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:36:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:36:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:20,165 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:36:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:20,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:20,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:20,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:20,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:36:20,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:20,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:20,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:20,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:20,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:36:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:36:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:21,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:36:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:36:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:36:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:21,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 126 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:36:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271991190] [2020-10-26 23:36:21,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:21,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:21,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3940015] [2020-10-26 23:36:21,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:21,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:21,459 INFO L87 Difference]: Start difference. First operand 2922 states and 3659 transitions. Second operand 7 states. [2020-10-26 23:36:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:30,152 INFO L93 Difference]: Finished difference Result 5593 states and 7090 transitions. [2020-10-26 23:36:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:36:30,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-26 23:36:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:30,173 INFO L225 Difference]: With dead ends: 5593 [2020-10-26 23:36:30,174 INFO L226 Difference]: Without dead ends: 2984 [2020-10-26 23:36:30,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:36:30,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-10-26 23:36:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2936. [2020-10-26 23:36:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2936 states. [2020-10-26 23:36:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 3675 transitions. [2020-10-26 23:36:30,291 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 3675 transitions. Word has length 351 [2020-10-26 23:36:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:30,292 INFO L481 AbstractCegarLoop]: Abstraction has 2936 states and 3675 transitions. [2020-10-26 23:36:30,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 3675 transitions. [2020-10-26 23:36:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-26 23:36:30,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:30,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:30,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:36:30,304 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:30,305 INFO L82 PathProgramCache]: Analyzing trace with hash -248439625, now seen corresponding path program 1 times [2020-10-26 23:36:30,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:30,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824117347] [2020-10-26 23:36:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:30,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:34,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-26 23:36:34,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-26 23:36:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:36:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:36:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:34,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:34,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:34,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:34,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:34,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:34,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:36:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:36:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:34,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:34,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:36:34,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:36:35,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824117347] [2020-10-26 23:36:35,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:35,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:35,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084814880] [2020-10-26 23:36:35,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:35,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:35,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:35,242 INFO L87 Difference]: Start difference. First operand 2936 states and 3675 transitions. Second operand 7 states. [2020-10-26 23:36:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:47,760 INFO L93 Difference]: Finished difference Result 6905 states and 9091 transitions. [2020-10-26 23:36:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:36:47,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 425 [2020-10-26 23:36:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:47,789 INFO L225 Difference]: With dead ends: 6905 [2020-10-26 23:36:47,789 INFO L226 Difference]: Without dead ends: 4282 [2020-10-26 23:36:47,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:36:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2020-10-26 23:36:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 4236. [2020-10-26 23:36:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4236 states. [2020-10-26 23:36:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 5196 transitions. [2020-10-26 23:36:47,929 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 5196 transitions. Word has length 425 [2020-10-26 23:36:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:47,929 INFO L481 AbstractCegarLoop]: Abstraction has 4236 states and 5196 transitions. [2020-10-26 23:36:47,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 5196 transitions. [2020-10-26 23:36:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2020-10-26 23:36:47,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:47,942 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:47,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:36:47,942 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1580858982, now seen corresponding path program 1 times [2020-10-26 23:36:47,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:47,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861822237] [2020-10-26 23:36:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:48,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:48,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:53,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:36:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-26 23:36:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:36:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:53,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:36:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:53,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:53,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:36:53,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:53,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-26 23:36:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:53,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:36:53,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:36:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:36:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:54,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:36:54,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 285 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:36:54,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861822237] [2020-10-26 23:36:54,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:54,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:54,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890157754] [2020-10-26 23:36:54,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:54,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:54,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:54,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:54,512 INFO L87 Difference]: Start difference. First operand 4236 states and 5196 transitions. Second operand 7 states. [2020-10-26 23:37:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:08,913 INFO L93 Difference]: Finished difference Result 8876 states and 11282 transitions. [2020-10-26 23:37:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:37:08,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 446 [2020-10-26 23:37:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:08,942 INFO L225 Difference]: With dead ends: 8876 [2020-10-26 23:37:08,943 INFO L226 Difference]: Without dead ends: 5246 [2020-10-26 23:37:08,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:37:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2020-10-26 23:37:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 5203. [2020-10-26 23:37:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5203 states. [2020-10-26 23:37:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6179 transitions. [2020-10-26 23:37:09,098 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6179 transitions. Word has length 446 [2020-10-26 23:37:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:09,098 INFO L481 AbstractCegarLoop]: Abstraction has 5203 states and 6179 transitions. [2020-10-26 23:37:09,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6179 transitions. [2020-10-26 23:37:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-26 23:37:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:09,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:09,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:37:09,112 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:09,112 INFO L82 PathProgramCache]: Analyzing trace with hash -5349332, now seen corresponding path program 1 times [2020-10-26 23:37:09,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:09,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709045149] [2020-10-26 23:37:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:14,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 516 [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:37:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:37:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 439 [2020-10-26 23:37:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:14,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:14,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:14,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:37:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:14,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:37:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:15,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:37:15,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:37:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:37:15,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:37:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:37:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 191 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-26 23:37:15,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709045149] [2020-10-26 23:37:15,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:15,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:37:15,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326677108] [2020-10-26 23:37:15,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:15,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:15,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:15,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:15,755 INFO L87 Difference]: Start difference. First operand 5203 states and 6179 transitions. Second operand 7 states. [2020-10-26 23:37:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:28,798 INFO L93 Difference]: Finished difference Result 11406 states and 13732 transitions. [2020-10-26 23:37:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:37:28,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-26 23:37:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:28,833 INFO L225 Difference]: With dead ends: 11406 [2020-10-26 23:37:28,833 INFO L226 Difference]: Without dead ends: 6821 [2020-10-26 23:37:28,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:37:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2020-10-26 23:37:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 6462. [2020-10-26 23:37:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6462 states. [2020-10-26 23:37:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6462 states to 6462 states and 7479 transitions. [2020-10-26 23:37:29,021 INFO L78 Accepts]: Start accepts. Automaton has 6462 states and 7479 transitions. Word has length 500 [2020-10-26 23:37:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:29,022 INFO L481 AbstractCegarLoop]: Abstraction has 6462 states and 7479 transitions. [2020-10-26 23:37:29,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6462 states and 7479 transitions. [2020-10-26 23:37:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-26 23:37:29,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:29,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:29,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:37:29,041 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:29,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1690239682, now seen corresponding path program 1 times [2020-10-26 23:37:29,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179439870] [2020-10-26 23:37:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:29,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:34,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 552 [2020-10-26 23:37:34,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:34,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-26 23:37:34,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:37:34,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:37:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:34,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:34,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:34,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:34,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:37:34,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:34,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:34,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:34,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:37:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:37:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:34,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:37:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:37:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:37:35,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 301 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-26 23:37:35,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179439870] [2020-10-26 23:37:35,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:35,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:35,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145793945] [2020-10-26 23:37:35,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:35,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:35,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:35,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:35,677 INFO L87 Difference]: Start difference. First operand 6462 states and 7479 transitions. Second operand 7 states. [2020-10-26 23:37:38,046 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:37:40,099 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-26 23:37:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:45,816 INFO L93 Difference]: Finished difference Result 13596 states and 15793 transitions. [2020-10-26 23:37:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:37:45,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-26 23:37:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:45,865 INFO L225 Difference]: With dead ends: 13596 [2020-10-26 23:37:45,865 INFO L226 Difference]: Without dead ends: 7756 [2020-10-26 23:37:45,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:37:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2020-10-26 23:37:46,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 7712. [2020-10-26 23:37:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7712 states. [2020-10-26 23:37:46,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7712 states to 7712 states and 8790 transitions. [2020-10-26 23:37:46,074 INFO L78 Accepts]: Start accepts. Automaton has 7712 states and 8790 transitions. Word has length 536 [2020-10-26 23:37:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:46,075 INFO L481 AbstractCegarLoop]: Abstraction has 7712 states and 8790 transitions. [2020-10-26 23:37:46,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7712 states and 8790 transitions. [2020-10-26 23:37:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-26 23:37:46,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:46,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:46,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:37:46,085 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash -825477174, now seen corresponding path program 1 times [2020-10-26 23:37:46,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:46,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70466228] [2020-10-26 23:37:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-26 23:37:49,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3133 [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:37:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:49,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:37:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:37:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:37:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:37:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:50,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:37:50,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:50,356 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:37:50,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70466228] [2020-10-26 23:37:50,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:50,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:50,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080802588] [2020-10-26 23:37:50,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:50,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:50,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:50,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:50,359 INFO L87 Difference]: Start difference. First operand 7712 states and 8790 transitions. Second operand 7 states. [2020-10-26 23:38:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:04,922 INFO L93 Difference]: Finished difference Result 14580 states and 17673 transitions. [2020-10-26 23:38:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:04,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-26 23:38:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:04,959 INFO L225 Difference]: With dead ends: 14580 [2020-10-26 23:38:04,960 INFO L226 Difference]: Without dead ends: 9362 [2020-10-26 23:38:04,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2020-10-26 23:38:05,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 9296. [2020-10-26 23:38:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9296 states. [2020-10-26 23:38:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9296 states to 9296 states and 10643 transitions. [2020-10-26 23:38:05,212 INFO L78 Accepts]: Start accepts. Automaton has 9296 states and 10643 transitions. Word has length 548 [2020-10-26 23:38:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:05,214 INFO L481 AbstractCegarLoop]: Abstraction has 9296 states and 10643 transitions. [2020-10-26 23:38:05,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 9296 states and 10643 transitions. [2020-10-26 23:38:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2020-10-26 23:38:05,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:05,224 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:05,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:38:05,224 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash 890158510, now seen corresponding path program 1 times [2020-10-26 23:38:05,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:05,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406526673] [2020-10-26 23:38:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:05,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:09,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:09,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 566 [2020-10-26 23:38:09,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3635 [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:38:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:09,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:38:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:09,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:09,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:09,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:09,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:09,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:38:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:09,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:09,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:38:09,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:09,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:38:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:09,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:09,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-26 23:38:09,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:09,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:38:09,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:38:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:38:09,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406526673] [2020-10-26 23:38:09,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:09,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:09,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053887297] [2020-10-26 23:38:09,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:38:09,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:09,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:38:09,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:38:09,936 INFO L87 Difference]: Start difference. First operand 9296 states and 10643 transitions. Second operand 7 states. [2020-10-26 23:38:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:22,211 INFO L93 Difference]: Finished difference Result 20626 states and 25037 transitions. [2020-10-26 23:38:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:22,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 550 [2020-10-26 23:38:22,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:22,354 INFO L225 Difference]: With dead ends: 20626 [2020-10-26 23:38:22,355 INFO L226 Difference]: Without dead ends: 11952 [2020-10-26 23:38:22,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11952 states. [2020-10-26 23:38:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11952 to 11836. [2020-10-26 23:38:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11836 states. [2020-10-26 23:38:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11836 states to 11836 states and 13540 transitions. [2020-10-26 23:38:22,697 INFO L78 Accepts]: Start accepts. Automaton has 11836 states and 13540 transitions. Word has length 550 [2020-10-26 23:38:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:22,698 INFO L481 AbstractCegarLoop]: Abstraction has 11836 states and 13540 transitions. [2020-10-26 23:38:22,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11836 states and 13540 transitions. [2020-10-26 23:38:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2020-10-26 23:38:22,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:22,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:22,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:38:22,712 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:22,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1152132426, now seen corresponding path program 1 times [2020-10-26 23:38:22,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:22,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991264843] [2020-10-26 23:38:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:25,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:25,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 646 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2822 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:38:25,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:26,120 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:38:26,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:26,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:26,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:26,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:26,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:26,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:38:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:26,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:38:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:38:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:26,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:26,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:38:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-26 23:38:27,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991264843] [2020-10-26 23:38:27,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:27,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:27,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89220672] [2020-10-26 23:38:27,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:38:27,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:27,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:38:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:38:27,042 INFO L87 Difference]: Start difference. First operand 11836 states and 13540 transitions. Second operand 7 states. [2020-10-26 23:38:30,264 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:38:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:41,551 INFO L93 Difference]: Finished difference Result 25319 states and 29779 transitions. [2020-10-26 23:38:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:41,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 630 [2020-10-26 23:38:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:41,599 INFO L225 Difference]: With dead ends: 25319 [2020-10-26 23:38:41,600 INFO L226 Difference]: Without dead ends: 14105 [2020-10-26 23:38:41,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14105 states. [2020-10-26 23:38:41,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14105 to 13747. [2020-10-26 23:38:41,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13747 states. [2020-10-26 23:38:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 15686 transitions. [2020-10-26 23:38:41,921 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 15686 transitions. Word has length 630 [2020-10-26 23:38:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:41,923 INFO L481 AbstractCegarLoop]: Abstraction has 13747 states and 15686 transitions. [2020-10-26 23:38:41,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 15686 transitions. [2020-10-26 23:38:41,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-26 23:38:41,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:41,938 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:41,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:38:41,939 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1945098011, now seen corresponding path program 1 times [2020-10-26 23:38:41,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:41,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137219384] [2020-10-26 23:38:41,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:42,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-26 23:38:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 592 [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-26 23:38:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:43,196 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:38:43,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:43,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:43,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:43,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:38:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:38:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:43,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:38:43,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:38:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2020-10-26 23:38:43,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137219384] [2020-10-26 23:38:43,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:43,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:38:43,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200706725] [2020-10-26 23:38:43,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:38:43,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:43,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:38:43,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:38:43,940 INFO L87 Difference]: Start difference. First operand 13747 states and 15686 transitions. Second operand 5 states.