/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:18:58,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:18:58,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:18:58,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:18:58,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:18:58,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:18:58,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:18:58,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:18:58,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:18:58,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:18:58,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:18:58,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:18:58,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:18:58,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:18:58,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:18:58,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:18:58,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:18:58,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:18:58,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:18:58,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:18:58,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:18:58,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:18:58,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:18:58,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:18:58,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:18:58,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:18:58,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:18:58,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:18:58,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:18:58,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:18:58,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:18:58,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:18:58,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:18:58,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:18:58,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:18:58,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:18:58,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:18:58,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:18:58,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:18:58,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:18:58,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:18:58,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:18:58,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:18:58,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:18:58,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:18:58,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:18:58,836 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:18:58,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:18:58,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:18:58,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:18:58,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:18:58,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:18:58,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:18:58,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:18:58,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:18:58,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:18:58,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:18:58,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:18:58,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:18:58,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:18:58,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:18:58,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:18:58,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:18:58,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:18:58,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:18:58,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:18:58,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:18:58,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:18:58,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:18:58,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:18:58,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:18:58,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:18:59,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:18:59,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:18:59,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:18:59,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:18:59,353 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:18:59,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label42.c [2020-10-28 10:18:59,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dab45a20/a1da3e04f4124652b31d7d155f018836/FLAG957f14b9e [2020-10-28 10:19:00,315 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:19:00,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label42.c [2020-10-28 10:19:00,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dab45a20/a1da3e04f4124652b31d7d155f018836/FLAG957f14b9e [2020-10-28 10:19:00,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dab45a20/a1da3e04f4124652b31d7d155f018836 [2020-10-28 10:19:00,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:19:00,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:19:00,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:19:00,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:19:00,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:19:00,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:19:00" (1/1) ... [2020-10-28 10:19:00,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aef3451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:00, skipping insertion in model container [2020-10-28 10:19:00,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:19:00" (1/1) ... [2020-10-28 10:19:00,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:19:00,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:19:01,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:19:01,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:19:01,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:19:01,776 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:19:01,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01 WrapperNode [2020-10-28 10:19:01,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:19:01,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:19:01,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:19:01,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:19:01,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... [2020-10-28 10:19:01,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:19:01,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:19:01,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:19:01,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:19:01,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:19:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:19:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:19:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:19:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:19:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:19:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:19:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:19:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:19:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:19:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:19:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:19:02,081 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:19:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:19:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:19:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:19:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:19:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:19:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:19:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:19:04,205 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:19:04,205 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:19:04,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:19:04 BoogieIcfgContainer [2020-10-28 10:19:04,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:19:04,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:19:04,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:19:04,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:19:04,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:19:00" (1/3) ... [2020-10-28 10:19:04,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f0753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:19:04, skipping insertion in model container [2020-10-28 10:19:04,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:19:01" (2/3) ... [2020-10-28 10:19:04,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f0753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:19:04, skipping insertion in model container [2020-10-28 10:19:04,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:19:04" (3/3) ... [2020-10-28 10:19:04,218 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label42.c [2020-10-28 10:19:04,230 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:19:04,236 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:19:04,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:19:04,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:19:04,281 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:19:04,281 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:19:04,281 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:19:04,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:19:04,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:19:04,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:19:04,282 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:19:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:19:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 10:19:04,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:04,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:04,328 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash -320592556, now seen corresponding path program 1 times [2020-10-28 10:19:04,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:04,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632763919] [2020-10-28 10:19:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:09,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-28 10:19:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:19:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4473 [2020-10-28 10:19:09,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:09,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:09,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:19:09,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 10:19:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:19:09,749 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:09,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:09,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:09,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:19:09,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:09,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:09,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:19:09,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:09,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632763919] [2020-10-28 10:19:09,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:19:09,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:19:09,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045997510] [2020-10-28 10:19:09,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:19:09,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:09,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:19:09,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:19:10,002 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:19:10,293 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:13,949 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-28 10:19:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:13,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 203 [2020-10-28 10:19:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:13,972 INFO L225 Difference]: With dead ends: 889 [2020-10-28 10:19:13,972 INFO L226 Difference]: Without dead ends: 481 [2020-10-28 10:19:13,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-28 10:19:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-28 10:19:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-28 10:19:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-28 10:19:14,089 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 203 [2020-10-28 10:19:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:14,093 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-28 10:19:14,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:19:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-28 10:19:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 10:19:14,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:14,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:14,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:19:14,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:14,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:14,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1699078787, now seen corresponding path program 1 times [2020-10-28 10:19:14,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:14,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050016109] [2020-10-28 10:19:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:14,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:15,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:18,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 10:19:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:19:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4502 [2020-10-28 10:19:18,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:18,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:19:18,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:19:18,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:19:19,112 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:19,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:19,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:19,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:19,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:19:19,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:19,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:19,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:19,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:19,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:19,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:19,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:19,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:19,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:19,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:19,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:19:19,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:19,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050016109] [2020-10-28 10:19:19,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:19,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:19,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745709349] [2020-10-28 10:19:19,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:19,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:19,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:19,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:19,403 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-28 10:19:19,769 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:23,093 INFO L93 Difference]: Finished difference Result 1373 states and 2132 transitions. [2020-10-28 10:19:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:23,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-28 10:19:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:23,103 INFO L225 Difference]: With dead ends: 1373 [2020-10-28 10:19:23,103 INFO L226 Difference]: Without dead ends: 903 [2020-10-28 10:19:23,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-28 10:19:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 896. [2020-10-28 10:19:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-28 10:19:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1223 transitions. [2020-10-28 10:19:23,168 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1223 transitions. Word has length 212 [2020-10-28 10:19:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:23,171 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1223 transitions. [2020-10-28 10:19:23,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1223 transitions. [2020-10-28 10:19:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 10:19:23,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:23,181 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:19:23,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:19:23,182 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:23,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:23,185 INFO L82 PathProgramCache]: Analyzing trace with hash -680979999, now seen corresponding path program 1 times [2020-10-28 10:19:23,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:23,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953202807] [2020-10-28 10:19:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:26,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:26,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-28 10:19:26,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:26,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2905 [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:19:26,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:26,533 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:26,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:26,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:19:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:26,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:26,698 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:19:26,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:26,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:19:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 10:19:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:26,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:19:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:19:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:26,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953202807] [2020-10-28 10:19:26,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:26,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:26,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558020263] [2020-10-28 10:19:26,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:26,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:26,905 INFO L87 Difference]: Start difference. First operand 896 states and 1223 transitions. Second operand 5 states. [2020-10-28 10:19:27,282 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:30,529 INFO L93 Difference]: Finished difference Result 2211 states and 3131 transitions. [2020-10-28 10:19:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:30,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-28 10:19:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:30,542 INFO L225 Difference]: With dead ends: 2211 [2020-10-28 10:19:30,542 INFO L226 Difference]: Without dead ends: 1321 [2020-10-28 10:19:30,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2020-10-28 10:19:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1314. [2020-10-28 10:19:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-28 10:19:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1840 transitions. [2020-10-28 10:19:30,605 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1840 transitions. Word has length 221 [2020-10-28 10:19:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:30,605 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1840 transitions. [2020-10-28 10:19:30,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1840 transitions. [2020-10-28 10:19:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 10:19:30,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:30,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:30,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:19:30,613 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1478374996, now seen corresponding path program 1 times [2020-10-28 10:19:30,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:30,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737999926] [2020-10-28 10:19:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:30,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:34,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:35,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:35,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4342 [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:35,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 10:19:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:19:35,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:35,453 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:35,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:35,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:35,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:19:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:35,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:35,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:35,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:19:35,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:19:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:35,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 10:19:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:35,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737999926] [2020-10-28 10:19:35,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:35,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:35,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144998173] [2020-10-28 10:19:35,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:35,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:35,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:35,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:35,793 INFO L87 Difference]: Start difference. First operand 1314 states and 1840 transitions. Second operand 5 states. [2020-10-28 10:19:36,135 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:39,688 INFO L93 Difference]: Finished difference Result 3905 states and 5573 transitions. [2020-10-28 10:19:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:39,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2020-10-28 10:19:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:39,707 INFO L225 Difference]: With dead ends: 3905 [2020-10-28 10:19:39,707 INFO L226 Difference]: Without dead ends: 2597 [2020-10-28 10:19:39,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2020-10-28 10:19:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2575. [2020-10-28 10:19:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-28 10:19:39,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3606 transitions. [2020-10-28 10:19:39,813 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3606 transitions. Word has length 239 [2020-10-28 10:19:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:39,814 INFO L481 AbstractCegarLoop]: Abstraction has 2575 states and 3606 transitions. [2020-10-28 10:19:39,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3606 transitions. [2020-10-28 10:19:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-28 10:19:39,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:39,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:39,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:19:39,826 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1868256274, now seen corresponding path program 1 times [2020-10-28 10:19:39,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:39,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966129463] [2020-10-28 10:19:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:39,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:40,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2537 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 10:19:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 10:19:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:42,748 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:42,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:42,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:19:42,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:42,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:42,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:42,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:42,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:19:42,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:42,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:19:42,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:19:43,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966129463] [2020-10-28 10:19:43,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:43,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:19:43,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507158896] [2020-10-28 10:19:43,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:19:43,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:43,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:19:43,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:19:43,094 INFO L87 Difference]: Start difference. First operand 2575 states and 3606 transitions. Second operand 5 states. [2020-10-28 10:19:43,446 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:47,044 INFO L93 Difference]: Finished difference Result 7664 states and 11000 transitions. [2020-10-28 10:19:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:19:47,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-28 10:19:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:47,086 INFO L225 Difference]: With dead ends: 7664 [2020-10-28 10:19:47,086 INFO L226 Difference]: Without dead ends: 5095 [2020-10-28 10:19:47,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:19:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2020-10-28 10:19:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5088. [2020-10-28 10:19:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5088 states. [2020-10-28 10:19:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5088 states to 5088 states and 7051 transitions. [2020-10-28 10:19:47,299 INFO L78 Accepts]: Start accepts. Automaton has 5088 states and 7051 transitions. Word has length 248 [2020-10-28 10:19:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:47,300 INFO L481 AbstractCegarLoop]: Abstraction has 5088 states and 7051 transitions. [2020-10-28 10:19:47,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:19:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5088 states and 7051 transitions. [2020-10-28 10:19:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-28 10:19:47,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:47,320 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:19:47,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:19:47,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash 487968827, now seen corresponding path program 1 times [2020-10-28 10:19:47,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:47,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168970788] [2020-10-28 10:19:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:47,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3970 [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:19:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 10:19:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,598 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:19:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:19:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:51,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:19:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 10:19:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:51,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:51,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:19:51,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:51,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:19:51,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:51,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:19:51,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:51,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 47 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:19:52,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168970788] [2020-10-28 10:19:52,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:52,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:19:52,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43798368] [2020-10-28 10:19:52,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:19:52,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:19:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:19:52,023 INFO L87 Difference]: Start difference. First operand 5088 states and 7051 transitions. Second operand 7 states. [2020-10-28 10:19:52,287 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:19:53,838 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:56,465 INFO L93 Difference]: Finished difference Result 15175 states and 22238 transitions. [2020-10-28 10:19:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:19:56,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-28 10:19:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:56,532 INFO L225 Difference]: With dead ends: 15175 [2020-10-28 10:19:56,533 INFO L226 Difference]: Without dead ends: 10093 [2020-10-28 10:19:56,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:19:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2020-10-28 10:19:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 10029. [2020-10-28 10:19:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10029 states. [2020-10-28 10:19:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10029 states to 10029 states and 13984 transitions. [2020-10-28 10:19:56,961 INFO L78 Accepts]: Start accepts. Automaton has 10029 states and 13984 transitions. Word has length 256 [2020-10-28 10:19:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:56,962 INFO L481 AbstractCegarLoop]: Abstraction has 10029 states and 13984 transitions. [2020-10-28 10:19:56,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:19:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 10029 states and 13984 transitions. [2020-10-28 10:19:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 10:19:57,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:57,004 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-28 10:19:57,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:19:57,004 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:57,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1874801035, now seen corresponding path program 1 times [2020-10-28 10:19:57,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:57,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73068208] [2020-10-28 10:19:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:59,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:59,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-28 10:20:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:20:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 10:20:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:20:02,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:20:02,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:02,439 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:02,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:02,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:02,564 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:20:02,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:20:02,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:20:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:20:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:02,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 10:20:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:02,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:02,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:02,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:20:02,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:02,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:20:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-28 10:20:02,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73068208] [2020-10-28 10:20:02,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:02,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:20:02,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890837976] [2020-10-28 10:20:02,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:20:02,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:02,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:20:02,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:20:02,985 INFO L87 Difference]: Start difference. First operand 10029 states and 13984 transitions. Second operand 8 states. [2020-10-28 10:20:03,247 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:04,022 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:07,104 INFO L93 Difference]: Finished difference Result 20285 states and 29300 transitions. [2020-10-28 10:20:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:20:07,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 262 [2020-10-28 10:20:07,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:07,171 INFO L225 Difference]: With dead ends: 20285 [2020-10-28 10:20:07,171 INFO L226 Difference]: Without dead ends: 10262 [2020-10-28 10:20:07,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:20:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10262 states. [2020-10-28 10:20:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10262 to 10151. [2020-10-28 10:20:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10151 states. [2020-10-28 10:20:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10151 states to 10151 states and 13518 transitions. [2020-10-28 10:20:07,617 INFO L78 Accepts]: Start accepts. Automaton has 10151 states and 13518 transitions. Word has length 262 [2020-10-28 10:20:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:07,618 INFO L481 AbstractCegarLoop]: Abstraction has 10151 states and 13518 transitions. [2020-10-28 10:20:07,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:20:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10151 states and 13518 transitions. [2020-10-28 10:20:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 10:20:07,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:07,658 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 10:20:07,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:20:07,659 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:07,659 INFO L82 PathProgramCache]: Analyzing trace with hash 214015637, now seen corresponding path program 1 times [2020-10-28 10:20:07,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:07,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999344058] [2020-10-28 10:20:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:12,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-28 10:20:12,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:20:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 10:20:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:12,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:20:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:20:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:20:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:13,011 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:13,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:13,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:13,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:20:13,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:13,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:13,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:13,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:20:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:13,476 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-10-28 10:20:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:20:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:13,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:13,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:20:13,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999344058] [2020-10-28 10:20:13,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:13,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:13,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210597582] [2020-10-28 10:20:13,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:13,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:13,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:13,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:13,729 INFO L87 Difference]: Start difference. First operand 10151 states and 13518 transitions. Second operand 7 states. [2020-10-28 10:20:14,001 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:15,209 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:20:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:18,329 INFO L93 Difference]: Finished difference Result 29873 states and 40626 transitions. [2020-10-28 10:20:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:20:18,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-28 10:20:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:18,406 INFO L225 Difference]: With dead ends: 29873 [2020-10-28 10:20:18,406 INFO L226 Difference]: Without dead ends: 19728 [2020-10-28 10:20:18,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:20:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19728 states. [2020-10-28 10:20:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19728 to 19665. [2020-10-28 10:20:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19665 states. [2020-10-28 10:20:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19665 states to 19665 states and 25684 transitions. [2020-10-28 10:20:19,014 INFO L78 Accepts]: Start accepts. Automaton has 19665 states and 25684 transitions. Word has length 265 [2020-10-28 10:20:19,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:19,014 INFO L481 AbstractCegarLoop]: Abstraction has 19665 states and 25684 transitions. [2020-10-28 10:20:19,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:19,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19665 states and 25684 transitions. [2020-10-28 10:20:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-28 10:20:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:19,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:19,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:20:19,081 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:19,081 INFO L82 PathProgramCache]: Analyzing trace with hash -606975416, now seen corresponding path program 1 times [2020-10-28 10:20:19,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:19,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763406427] [2020-10-28 10:20:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:24,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:24,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-10-28 10:20:24,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:20:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:24,476 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:24,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:24,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:24,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:24,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:20:24,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:20:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:24,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 10:20:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:24,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:24,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 76 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 10:20:24,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763406427] [2020-10-28 10:20:24,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:25,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:25,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240217569] [2020-10-28 10:20:25,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:25,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:25,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:25,002 INFO L87 Difference]: Start difference. First operand 19665 states and 25684 transitions. Second operand 7 states. [2020-10-28 10:20:25,320 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:26,370 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:20:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:29,421 INFO L93 Difference]: Finished difference Result 39484 states and 52535 transitions. [2020-10-28 10:20:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:20:29,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-28 10:20:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:29,508 INFO L225 Difference]: With dead ends: 39484 [2020-10-28 10:20:29,509 INFO L226 Difference]: Without dead ends: 19825 [2020-10-28 10:20:29,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:20:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19825 states. [2020-10-28 10:20:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19825 to 19693. [2020-10-28 10:20:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19693 states. [2020-10-28 10:20:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19693 states to 19693 states and 23641 transitions. [2020-10-28 10:20:30,323 INFO L78 Accepts]: Start accepts. Automaton has 19693 states and 23641 transitions. Word has length 276 [2020-10-28 10:20:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:30,323 INFO L481 AbstractCegarLoop]: Abstraction has 19693 states and 23641 transitions. [2020-10-28 10:20:30,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 19693 states and 23641 transitions. [2020-10-28 10:20:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 10:20:30,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:30,365 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:20:30,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:20:30,365 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash -990301480, now seen corresponding path program 1 times [2020-10-28 10:20:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:30,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712874108] [2020-10-28 10:20:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:30,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:35,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:35,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 10:20:35,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 10:20:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 10:20:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:35,800 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:35,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:35,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:35,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:35,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:35,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:35,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:35,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:35,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:35,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:35,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:20:35,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:35,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:36,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:20:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:36,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:20:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:36,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 10:20:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:36,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:20:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:20:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-28 10:20:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712874108] [2020-10-28 10:20:36,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:36,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:36,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589942549] [2020-10-28 10:20:36,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:36,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:36,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:36,433 INFO L87 Difference]: Start difference. First operand 19693 states and 23641 transitions. Second operand 7 states. [2020-10-28 10:20:36,688 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:20:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:38,974 INFO L93 Difference]: Finished difference Result 39109 states and 47028 transitions. [2020-10-28 10:20:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 10:20:38,975 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 308 [2020-10-28 10:20:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:39,032 INFO L225 Difference]: With dead ends: 39109 [2020-10-28 10:20:39,032 INFO L226 Difference]: Without dead ends: 19422 [2020-10-28 10:20:39,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:20:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19422 states. [2020-10-28 10:20:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19422 to 19370. [2020-10-28 10:20:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19370 states. [2020-10-28 10:20:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19370 states to 19370 states and 23068 transitions. [2020-10-28 10:20:39,566 INFO L78 Accepts]: Start accepts. Automaton has 19370 states and 23068 transitions. Word has length 308 [2020-10-28 10:20:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:39,566 INFO L481 AbstractCegarLoop]: Abstraction has 19370 states and 23068 transitions. [2020-10-28 10:20:39,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19370 states and 23068 transitions. [2020-10-28 10:20:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-28 10:20:39,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:39,608 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 10:20:39,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:20:39,609 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:39,610 INFO L82 PathProgramCache]: Analyzing trace with hash 574892907, now seen corresponding path program 1 times [2020-10-28 10:20:39,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:39,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478636005] [2020-10-28 10:20:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:39,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:39,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 10:20:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:44,973 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:44,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:44,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:44,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:44,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:45,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:45,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:45,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:45,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:45,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:20:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:20:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:20:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:45,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:45,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:45,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:20:45,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 10:20:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:45,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:45,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:20:45,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 10:20:45,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:45,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:20:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:20:45,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:20:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-28 10:20:45,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478636005] [2020-10-28 10:20:45,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:45,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:20:45,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509111852] [2020-10-28 10:20:45,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:20:45,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:45,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:20:45,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:45,685 INFO L87 Difference]: Start difference. First operand 19370 states and 23068 transitions. Second operand 7 states. [2020-10-28 10:20:46,141 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:48,141 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:20:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:50,340 INFO L93 Difference]: Finished difference Result 42843 states and 55163 transitions. [2020-10-28 10:20:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:20:50,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 329 [2020-10-28 10:20:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:50,449 INFO L225 Difference]: With dead ends: 42843 [2020-10-28 10:20:50,449 INFO L226 Difference]: Without dead ends: 23479 [2020-10-28 10:20:50,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:20:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23479 states. [2020-10-28 10:20:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23479 to 22726. [2020-10-28 10:20:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22726 states. [2020-10-28 10:20:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22726 states to 22726 states and 27001 transitions. [2020-10-28 10:20:51,269 INFO L78 Accepts]: Start accepts. Automaton has 22726 states and 27001 transitions. Word has length 329 [2020-10-28 10:20:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:20:51,270 INFO L481 AbstractCegarLoop]: Abstraction has 22726 states and 27001 transitions. [2020-10-28 10:20:51,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:20:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22726 states and 27001 transitions. [2020-10-28 10:20:51,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-28 10:20:51,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:20:51,310 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:20:51,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:20:51,311 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:20:51,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:20:51,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1182742928, now seen corresponding path program 1 times [2020-10-28 10:20:51,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:20:51,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901291851] [2020-10-28 10:20:51,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:20:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 10:20:56,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 10:20:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,696 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:20:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:20:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:20:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 10:20:56,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 10:20:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:56,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:56,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:20:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:20:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:20:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 10:20:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:57,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:20:57,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:57,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:20:57,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 10:20:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:20:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:20:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:20:57,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:20:57,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:20:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:20:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 157 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 10:20:57,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901291851] [2020-10-28 10:20:57,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:20:57,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:20:57,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329354436] [2020-10-28 10:20:57,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:20:57,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:20:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:20:57,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:20:57,214 INFO L87 Difference]: Start difference. First operand 22726 states and 27001 transitions. Second operand 6 states. [2020-10-28 10:20:57,494 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:20:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:20:59,747 INFO L93 Difference]: Finished difference Result 45484 states and 54051 transitions. [2020-10-28 10:20:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:20:59,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2020-10-28 10:20:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:20:59,826 INFO L225 Difference]: With dead ends: 45484 [2020-10-28 10:20:59,826 INFO L226 Difference]: Without dead ends: 22764 [2020-10-28 10:20:59,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:20:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22764 states. [2020-10-28 10:21:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22764 to 22720. [2020-10-28 10:21:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22720 states. [2020-10-28 10:21:00,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22720 states to 22720 states and 26987 transitions. [2020-10-28 10:21:00,445 INFO L78 Accepts]: Start accepts. Automaton has 22720 states and 26987 transitions. Word has length 353 [2020-10-28 10:21:00,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:00,445 INFO L481 AbstractCegarLoop]: Abstraction has 22720 states and 26987 transitions. [2020-10-28 10:21:00,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:21:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand 22720 states and 26987 transitions. [2020-10-28 10:21:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 10:21:00,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:00,486 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:00,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:21:00,486 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:00,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2024118839, now seen corresponding path program 1 times [2020-10-28 10:21:00,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:00,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700458835] [2020-10-28 10:21:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:00,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 10:21:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 10:21:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:05,854 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:05,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:05,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:21:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:06,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:06,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:06,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 10:21:06,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 10:21:06,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:06,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:06,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 10:21:06,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 10:21:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 10:21:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:06,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 10:21:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:21:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 10:21:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:06,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:06,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:21:06,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:21:06,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:06,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:21:06,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 146 proven. 64 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 10:21:06,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700458835] [2020-10-28 10:21:06,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:06,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:06,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000421027] [2020-10-28 10:21:06,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:06,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:06,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:06,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:06,432 INFO L87 Difference]: Start difference. First operand 22720 states and 26987 transitions. Second operand 7 states. [2020-10-28 10:21:06,806 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:21:10,798 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:21:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:10,832 INFO L93 Difference]: Finished difference Result 50536 states and 60119 transitions. [2020-10-28 10:21:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:21:10,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2020-10-28 10:21:10,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:10,920 INFO L225 Difference]: With dead ends: 50536 [2020-10-28 10:21:10,920 INFO L226 Difference]: Without dead ends: 27822 [2020-10-28 10:21:10,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27822 states. [2020-10-28 10:21:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27822 to 27125. [2020-10-28 10:21:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27125 states. [2020-10-28 10:21:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27125 states to 27125 states and 32227 transitions. [2020-10-28 10:21:11,636 INFO L78 Accepts]: Start accepts. Automaton has 27125 states and 32227 transitions. Word has length 361 [2020-10-28 10:21:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:11,636 INFO L481 AbstractCegarLoop]: Abstraction has 27125 states and 32227 transitions. [2020-10-28 10:21:11,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 27125 states and 32227 transitions. [2020-10-28 10:21:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-28 10:21:11,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:11,681 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:11,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:21:11,682 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:11,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:11,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1421259507, now seen corresponding path program 1 times [2020-10-28 10:21:11,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:11,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138903741] [2020-10-28 10:21:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:11,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 143 [2020-10-28 10:21:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 10:21:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,122 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:21:17,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 10:21:17,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:21:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:21:17,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:17,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:17,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 10:21:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:21:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 10:21:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:21:17,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-28 10:21:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:17,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:17,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:21:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 300 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 10:21:17,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138903741] [2020-10-28 10:21:17,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:17,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:21:17,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661875282] [2020-10-28 10:21:17,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:21:17,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:21:17,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:21:17,975 INFO L87 Difference]: Start difference. First operand 27125 states and 32227 transitions. Second operand 8 states. [2020-10-28 10:21:18,250 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:21:19,540 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:21:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:21,905 INFO L93 Difference]: Finished difference Result 60496 states and 72475 transitions. [2020-10-28 10:21:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:21:21,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-10-28 10:21:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:22,021 INFO L225 Difference]: With dead ends: 60496 [2020-10-28 10:21:22,021 INFO L226 Difference]: Without dead ends: 33797 [2020-10-28 10:21:22,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:21:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33797 states. [2020-10-28 10:21:23,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33797 to 32811. [2020-10-28 10:21:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32811 states. [2020-10-28 10:21:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32811 states to 32811 states and 39192 transitions. [2020-10-28 10:21:23,106 INFO L78 Accepts]: Start accepts. Automaton has 32811 states and 39192 transitions. Word has length 393 [2020-10-28 10:21:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:23,107 INFO L481 AbstractCegarLoop]: Abstraction has 32811 states and 39192 transitions. [2020-10-28 10:21:23,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:21:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 32811 states and 39192 transitions. [2020-10-28 10:21:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-28 10:21:23,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:23,168 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 10:21:23,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:21:23,169 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash 498890951, now seen corresponding path program 1 times [2020-10-28 10:21:23,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:23,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045446561] [2020-10-28 10:21:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:23,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-28 10:21:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:21:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:28,628 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:28,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:28,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:28,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:28,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:28,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:28,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:28,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:28,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:21:28,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:28,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:21:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:28,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:28,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:21:28,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 10:21:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:28,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:21:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:28,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:29,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:21:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 10:21:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:21:29,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 10:21:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:21:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:29,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 10:21:29,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:29,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 10:21:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:29,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:29,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 245 proven. 72 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-10-28 10:21:29,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045446561] [2020-10-28 10:21:29,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:29,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:29,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229106354] [2020-10-28 10:21:29,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:29,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:29,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:29,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:29,383 INFO L87 Difference]: Start difference. First operand 32811 states and 39192 transitions. Second operand 7 states. [2020-10-28 10:21:29,942 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:21:31,838 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:21:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:36,673 INFO L93 Difference]: Finished difference Result 78385 states and 99538 transitions. [2020-10-28 10:21:36,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:36,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-28 10:21:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:36,826 INFO L225 Difference]: With dead ends: 78385 [2020-10-28 10:21:36,826 INFO L226 Difference]: Without dead ends: 46843 [2020-10-28 10:21:36,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46843 states. [2020-10-28 10:21:38,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46843 to 45635. [2020-10-28 10:21:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45635 states. [2020-10-28 10:21:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45635 states to 45635 states and 54320 transitions. [2020-10-28 10:21:38,331 INFO L78 Accepts]: Start accepts. Automaton has 45635 states and 54320 transitions. Word has length 402 [2020-10-28 10:21:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:38,331 INFO L481 AbstractCegarLoop]: Abstraction has 45635 states and 54320 transitions. [2020-10-28 10:21:38,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 45635 states and 54320 transitions. [2020-10-28 10:21:38,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-28 10:21:38,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:38,413 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:21:38,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:21:38,413 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:38,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:38,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1862893355, now seen corresponding path program 1 times [2020-10-28 10:21:38,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:38,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237477717] [2020-10-28 10:21:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:38,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:21:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:43,811 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:43,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:43,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:43,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:43,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:21:43,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:43,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:21:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:43,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:43,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:43,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:43,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:21:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:44,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 10:21:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:44,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 10:21:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 10:21:44,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:44,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 10:21:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 10:21:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:21:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 10:21:44,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237477717] [2020-10-28 10:21:44,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:21:44,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:21:44,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444763232] [2020-10-28 10:21:44,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:21:44,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:21:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:21:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:21:44,513 INFO L87 Difference]: Start difference. First operand 45635 states and 54320 transitions. Second operand 7 states. [2020-10-28 10:21:44,909 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:21:45,333 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:21:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:21:51,440 INFO L93 Difference]: Finished difference Result 98148 states and 119688 transitions. [2020-10-28 10:21:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:21:51,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-28 10:21:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:21:51,602 INFO L225 Difference]: With dead ends: 98148 [2020-10-28 10:21:51,603 INFO L226 Difference]: Without dead ends: 56294 [2020-10-28 10:21:51,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:21:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56294 states. [2020-10-28 10:21:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56294 to 55274. [2020-10-28 10:21:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55274 states. [2020-10-28 10:21:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55274 states to 55274 states and 63776 transitions. [2020-10-28 10:21:53,489 INFO L78 Accepts]: Start accepts. Automaton has 55274 states and 63776 transitions. Word has length 414 [2020-10-28 10:21:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:21:53,489 INFO L481 AbstractCegarLoop]: Abstraction has 55274 states and 63776 transitions. [2020-10-28 10:21:53,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:21:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 55274 states and 63776 transitions. [2020-10-28 10:21:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-10-28 10:21:53,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:21:53,577 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:21:53,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:21:53,578 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:21:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:21:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1581931286, now seen corresponding path program 1 times [2020-10-28 10:21:53,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:21:53,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740196286] [2020-10-28 10:21:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:21:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:54,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:54,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:58,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:58,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-28 10:21:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:21:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5213 [2020-10-28 10:21:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:21:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-28 10:21:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 10:21:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,370 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:21:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:21:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:59,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:21:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:21:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:59,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:21:59,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:21:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:21:59,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:21:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:21:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:21:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:21:59,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 10:21:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:59,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 10:21:59,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-28 10:21:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:21:59,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:21:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 10:21:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:21:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 10:21:59,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:21:59,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:21:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:21:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-28 10:21:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:21:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:00,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:22:00,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:22:00,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:22:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 350 proven. 63 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-28 10:22:00,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740196286] [2020-10-28 10:22:00,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:22:00,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:22:00,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743490094] [2020-10-28 10:22:00,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:22:00,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:22:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:22:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:22:00,456 INFO L87 Difference]: Start difference. First operand 55274 states and 63776 transitions. Second operand 7 states. [2020-10-28 10:22:00,838 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:22:01,465 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:22:09,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:22:09,027 INFO L93 Difference]: Finished difference Result 196762 states and 238082 transitions. [2020-10-28 10:22:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:22:09,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2020-10-28 10:22:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:22:09,632 INFO L225 Difference]: With dead ends: 196762 [2020-10-28 10:22:09,632 INFO L226 Difference]: Without dead ends: 145335 [2020-10-28 10:22:09,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:22:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145335 states. [2020-10-28 10:22:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145335 to 142606. [2020-10-28 10:22:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142606 states. [2020-10-28 10:22:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142606 states to 142606 states and 165807 transitions. [2020-10-28 10:22:14,028 INFO L78 Accepts]: Start accepts. Automaton has 142606 states and 165807 transitions. Word has length 443 [2020-10-28 10:22:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:22:14,029 INFO L481 AbstractCegarLoop]: Abstraction has 142606 states and 165807 transitions. [2020-10-28 10:22:14,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:22:14,029 INFO L276 IsEmpty]: Start isEmpty. Operand 142606 states and 165807 transitions. [2020-10-28 10:22:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-28 10:22:14,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:22:14,582 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:22:14,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 10:22:14,582 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:22:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:22:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash -683256400, now seen corresponding path program 1 times [2020-10-28 10:22:14,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:22:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921050123] [2020-10-28 10:22:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:22:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:22:14,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:14,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:22:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking...