/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:55:01,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:55:01,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:55:01,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:55:01,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:55:01,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:55:01,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:55:01,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:55:01,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:55:01,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:55:01,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:55:01,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:55:01,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:55:01,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:55:01,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:55:01,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:55:01,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:55:01,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:55:01,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:55:01,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:55:01,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:55:01,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:55:01,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:55:01,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:55:01,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:55:01,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:55:01,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:55:01,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:55:01,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:55:01,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:55:01,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:55:01,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:55:01,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:55:01,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:55:01,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:55:01,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:55:01,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:55:01,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:55:01,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:55:01,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:55:01,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:55:01,967 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 [2020-10-29 04:55:01,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:55:01,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:55:01,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:55:02,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:55:02,000 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:55:02,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:55:02,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:55:02,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:55:02,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:55:02,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:55:02,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:55:02,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:55:02,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:55:02,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:55:02,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:55:02,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:55:02,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:55:02,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:55:02,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:55:02,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:55:02,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:55:02,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:02,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:55:02,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:55:02,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:55:02,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:55:02,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:55:02,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:55:02,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:55:02,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:55:02,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:55:02,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:55:02,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:55:02,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:55:02,521 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:55:02,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2020-10-29 04:55:02,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690f6157b/ba2a6c6c0e034316ada2573fc83cb588/FLAG05ad875eb [2020-10-29 04:55:03,541 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:55:03,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c [2020-10-29 04:55:03,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690f6157b/ba2a6c6c0e034316ada2573fc83cb588/FLAG05ad875eb [2020-10-29 04:55:03,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690f6157b/ba2a6c6c0e034316ada2573fc83cb588 [2020-10-29 04:55:03,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:55:03,676 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:55:03,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:03,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:55:03,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:55:03,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:03" (1/1) ... [2020-10-29 04:55:03,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6ecc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:03, skipping insertion in model container [2020-10-29 04:55:03,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:03" (1/1) ... [2020-10-29 04:55:03,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:55:03,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:55:04,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:04,570 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:55:04,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:04,948 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:55:04,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04 WrapperNode [2020-10-29 04:55:04,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:04,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:55:04,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:55:04,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:55:04,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:04,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (1/1) ... [2020-10-29 04:55:05,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:55:05,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:55:05,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:55:05,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:55:05,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (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 [2020-10-29 04:55:05,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:55:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:55:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:55:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:55:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:55:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:55:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:55:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:55:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:55:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:55:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:55:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:55:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:55:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:55:07,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:55:07,492 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:55:07,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:07 BoogieIcfgContainer [2020-10-29 04:55:07,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:55:07,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:55:07,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:55:07,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:55:07,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:03" (1/3) ... [2020-10-29 04:55:07,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:07, skipping insertion in model container [2020-10-29 04:55:07,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:04" (2/3) ... [2020-10-29 04:55:07,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198e75c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:07, skipping insertion in model container [2020-10-29 04:55:07,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:07" (3/3) ... [2020-10-29 04:55:07,505 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label24.c [2020-10-29 04:55:07,517 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:55:07,523 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:55:07,538 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:55:07,569 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:55:07,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:55:07,570 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:55:07,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:55:07,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:55:07,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:55:07,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:55:07,570 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:55:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:55:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 04:55:07,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:07,616 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] [2020-10-29 04:55:07,616 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1866826472, now seen corresponding path program 1 times [2020-10-29 04:55:07,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:07,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845725951] [2020-10-29 04:55:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:08,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:12,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4520 [2020-10-29 04:55:12,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:12,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:12,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 04:55:12,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:13,202 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:13,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:13,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:13,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:13,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:55:13,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:13,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:13,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:13,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:13,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845725951] [2020-10-29 04:55:13,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:13,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:55:13,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402177890] [2020-10-29 04:55:13,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:55:13,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:13,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:55:13,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:55:13,466 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:55:13,748 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:55:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:17,120 INFO L93 Difference]: Finished difference Result 869 states and 1524 transitions. [2020-10-29 04:55:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:17,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2020-10-29 04:55:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:17,142 INFO L225 Difference]: With dead ends: 869 [2020-10-29 04:55:17,143 INFO L226 Difference]: Without dead ends: 477 [2020-10-29 04:55:17,151 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 [2020-10-29 04:55:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-29 04:55:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 468. [2020-10-29 04:55:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-29 04:55:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 722 transitions. [2020-10-29 04:55:17,253 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 722 transitions. Word has length 198 [2020-10-29 04:55:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:17,258 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 722 transitions. [2020-10-29 04:55:17,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:55:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 722 transitions. [2020-10-29 04:55:17,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 04:55:17,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:17,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:17,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:55:17,280 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 22405844, now seen corresponding path program 1 times [2020-10-29 04:55:17,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:17,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838379379] [2020-10-29 04:55:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:21,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:21,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 04:55:21,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:55:21,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3955 [2020-10-29 04:55:21,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:21,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:21,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:55:21,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 04:55:21,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 04:55:21,813 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:21,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:21,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:21,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:21,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:21,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:21,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:55:22,002 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:55:22,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:22,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:22,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:55:22,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:22,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:22,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:55:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:22,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838379379] [2020-10-29 04:55:22,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:22,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:22,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496308894] [2020-10-29 04:55:22,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:22,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:22,224 INFO L87 Difference]: Start difference. First operand 468 states and 722 transitions. Second operand 5 states. [2020-10-29 04:55:22,661 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:25,950 INFO L93 Difference]: Finished difference Result 1354 states and 2109 transitions. [2020-10-29 04:55:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:25,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-29 04:55:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:25,962 INFO L225 Difference]: With dead ends: 1354 [2020-10-29 04:55:25,962 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 04:55:25,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 04:55:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2020-10-29 04:55:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-29 04:55:26,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 720 transitions. [2020-10-29 04:55:26,032 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 720 transitions. Word has length 208 [2020-10-29 04:55:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:26,033 INFO L481 AbstractCegarLoop]: Abstraction has 467 states and 720 transitions. [2020-10-29 04:55:26,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 720 transitions. [2020-10-29 04:55:26,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-29 04:55:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:26,037 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:55:26,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:26,038 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash 744848579, now seen corresponding path program 1 times [2020-10-29 04:55:26,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:26,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271825986] [2020-10-29 04:55:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:29,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 04:55:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3507 [2020-10-29 04:55:29,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:29,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:29,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 04:55:29,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 04:55:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:29,943 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:29,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:29,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:29,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:29,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:29,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:30,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:30,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:55:30,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:55:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:30,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271825986] [2020-10-29 04:55:30,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:30,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:30,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166973029] [2020-10-29 04:55:30,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:30,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:30,215 INFO L87 Difference]: Start difference. First operand 467 states and 720 transitions. Second operand 5 states. [2020-10-29 04:55:30,590 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:33,842 INFO L93 Difference]: Finished difference Result 1376 states and 2150 transitions. [2020-10-29 04:55:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:33,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-10-29 04:55:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:33,851 INFO L225 Difference]: With dead ends: 1376 [2020-10-29 04:55:33,852 INFO L226 Difference]: Without dead ends: 915 [2020-10-29 04:55:33,853 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 [2020-10-29 04:55:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2020-10-29 04:55:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 895. [2020-10-29 04:55:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 895 states. [2020-10-29 04:55:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1356 transitions. [2020-10-29 04:55:33,899 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1356 transitions. Word has length 212 [2020-10-29 04:55:33,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:33,900 INFO L481 AbstractCegarLoop]: Abstraction has 895 states and 1356 transitions. [2020-10-29 04:55:33,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:33,900 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1356 transitions. [2020-10-29 04:55:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 04:55:33,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:33,905 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 04:55:33,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:33,905 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:33,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:33,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1579252919, now seen corresponding path program 1 times [2020-10-29 04:55:33,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:33,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985454181] [2020-10-29 04:55:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:36,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 04:55:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2652 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 04:55:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:37,124 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:55:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:37,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:37,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:37,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:37,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:37,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:55:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 04:55:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:37,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:55:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:37,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985454181] [2020-10-29 04:55:37,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:37,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:55:37,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208341931] [2020-10-29 04:55:37,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:55:37,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:55:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:37,475 INFO L87 Difference]: Start difference. First operand 895 states and 1356 transitions. Second operand 6 states. [2020-10-29 04:55:37,888 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:39,290 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:42,497 INFO L93 Difference]: Finished difference Result 3497 states and 5438 transitions. [2020-10-29 04:55:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:42,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2020-10-29 04:55:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:42,522 INFO L225 Difference]: With dead ends: 3497 [2020-10-29 04:55:42,522 INFO L226 Difference]: Without dead ends: 2608 [2020-10-29 04:55:42,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2608 states. [2020-10-29 04:55:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2608 to 2572. [2020-10-29 04:55:42,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2572 states. [2020-10-29 04:55:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3891 transitions. [2020-10-29 04:55:42,637 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3891 transitions. Word has length 215 [2020-10-29 04:55:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:42,638 INFO L481 AbstractCegarLoop]: Abstraction has 2572 states and 3891 transitions. [2020-10-29 04:55:42,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:55:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3891 transitions. [2020-10-29 04:55:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 04:55:42,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:42,648 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:42,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:55:42,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:42,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1701243750, now seen corresponding path program 1 times [2020-10-29 04:55:42,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:42,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530364214] [2020-10-29 04:55:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-29 04:55:47,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:55:47,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 04:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 04:55:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,618 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-29 04:55:48,862 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-29 04:55:49,181 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-29 04:55:49,391 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2020-10-29 04:55:49,598 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-29 04:55:49,777 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-10-29 04:55:49,976 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-10-29 04:55:50,257 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:50,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:50,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:50,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:55:50,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:50,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:50,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:50,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:50,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:50,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:50,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:55:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:55:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 04:55:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:50,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:55:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:55:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:55:51,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530364214] [2020-10-29 04:55:51,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:51,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:55:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315784034] [2020-10-29 04:55:51,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 04:55:51,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 04:55:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:55:51,333 INFO L87 Difference]: Start difference. First operand 2572 states and 3891 transitions. Second operand 17 states. [2020-10-29 04:55:51,734 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 04:55:52,310 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-10-29 04:55:52,669 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-10-29 04:55:53,127 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-10-29 04:55:54,138 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 198 [2020-10-29 04:55:55,235 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 206 [2020-10-29 04:55:55,756 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2020-10-29 04:55:57,291 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 227 DAG size of output: 205 [2020-10-29 04:55:59,347 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 227 DAG size of output: 204 [2020-10-29 04:56:02,726 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 228 DAG size of output: 203 [2020-10-29 04:56:04,930 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 202 [2020-10-29 04:56:05,506 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2020-10-29 04:56:06,900 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 200 [2020-10-29 04:56:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:10,937 INFO L93 Difference]: Finished difference Result 7524 states and 11725 transitions. [2020-10-29 04:56:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 04:56:10,938 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 222 [2020-10-29 04:56:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:10,969 INFO L225 Difference]: With dead ends: 7524 [2020-10-29 04:56:10,969 INFO L226 Difference]: Without dead ends: 4958 [2020-10-29 04:56:10,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:56:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2020-10-29 04:56:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 4907. [2020-10-29 04:56:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4907 states. [2020-10-29 04:56:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 7473 transitions. [2020-10-29 04:56:11,194 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 7473 transitions. Word has length 222 [2020-10-29 04:56:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:11,195 INFO L481 AbstractCegarLoop]: Abstraction has 4907 states and 7473 transitions. [2020-10-29 04:56:11,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 04:56:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 7473 transitions. [2020-10-29 04:56:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 04:56:11,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:11,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 04:56:11,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:56:11,214 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash 126139170, now seen corresponding path program 1 times [2020-10-29 04:56:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:11,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275551371] [2020-10-29 04:56:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 04:56:16,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 04:56:16,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:16,610 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:16,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:16,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:56:16,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:16,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:16,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:16,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:16,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:16,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:56:16,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:16,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:16,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-29 04:56:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:16,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:16,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 04:56:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 04:56:16,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275551371] [2020-10-29 04:56:16,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:16,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:56:16,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576984388] [2020-10-29 04:56:16,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:56:16,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:16,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:56:16,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:16,916 INFO L87 Difference]: Start difference. First operand 4907 states and 7473 transitions. Second operand 6 states. [2020-10-29 04:56:17,175 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:17,460 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:22,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:22,502 INFO L93 Difference]: Finished difference Result 16752 states and 27047 transitions. [2020-10-29 04:56:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:56:22,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2020-10-29 04:56:22,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:22,578 INFO L225 Difference]: With dead ends: 16752 [2020-10-29 04:56:22,578 INFO L226 Difference]: Without dead ends: 11851 [2020-10-29 04:56:22,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:22,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11851 states. [2020-10-29 04:56:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11851 to 11837. [2020-10-29 04:56:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11837 states. [2020-10-29 04:56:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11837 states to 11837 states and 18419 transitions. [2020-10-29 04:56:23,193 INFO L78 Accepts]: Start accepts. Automaton has 11837 states and 18419 transitions. Word has length 224 [2020-10-29 04:56:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:23,195 INFO L481 AbstractCegarLoop]: Abstraction has 11837 states and 18419 transitions. [2020-10-29 04:56:23,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:56:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11837 states and 18419 transitions. [2020-10-29 04:56:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-29 04:56:23,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:23,241 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:23,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:56:23,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1161017543, now seen corresponding path program 1 times [2020-10-29 04:56:23,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:23,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222650289] [2020-10-29 04:56:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:23,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 04:56:28,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 04:56:28,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 04:56:28,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 04:56:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:28,713 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:28,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:56:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:56:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 04:56:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:56:28,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 04:56:28,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:28,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:56:29,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222650289] [2020-10-29 04:56:29,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:29,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:56:29,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312832855] [2020-10-29 04:56:29,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:56:29,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:29,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:56:29,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:56:29,097 INFO L87 Difference]: Start difference. First operand 11837 states and 18419 transitions. Second operand 5 states. [2020-10-29 04:56:29,364 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:32,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:32,824 INFO L93 Difference]: Finished difference Result 33319 states and 52978 transitions. [2020-10-29 04:56:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:32,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-29 04:56:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:32,942 INFO L225 Difference]: With dead ends: 33319 [2020-10-29 04:56:32,942 INFO L226 Difference]: Without dead ends: 21488 [2020-10-29 04:56:32,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21488 states. [2020-10-29 04:56:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21488 to 21268. [2020-10-29 04:56:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21268 states. [2020-10-29 04:56:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 34042 transitions. [2020-10-29 04:56:33,701 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 34042 transitions. Word has length 250 [2020-10-29 04:56:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:33,702 INFO L481 AbstractCegarLoop]: Abstraction has 21268 states and 34042 transitions. [2020-10-29 04:56:33,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 34042 transitions. [2020-10-29 04:56:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-29 04:56:33,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:33,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:33,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:56:33,788 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:33,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1742012865, now seen corresponding path program 1 times [2020-10-29 04:56:33,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:33,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085494421] [2020-10-29 04:56:33,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:38,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:56:38,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 04:56:38,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:39,120 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:56:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:39,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:39,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:39,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:39,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:56:39,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:39,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:56:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:39,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 04:56:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:39,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:39,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:39,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:56:39,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 04:56:39,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085494421] [2020-10-29 04:56:39,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:39,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:39,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767676470] [2020-10-29 04:56:39,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:39,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:39,542 INFO L87 Difference]: Start difference. First operand 21268 states and 34042 transitions. Second operand 7 states. [2020-10-29 04:56:39,799 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:43,880 INFO L93 Difference]: Finished difference Result 43350 states and 72843 transitions. [2020-10-29 04:56:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 04:56:43,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-29 04:56:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:44,139 INFO L225 Difference]: With dead ends: 43350 [2020-10-29 04:56:44,139 INFO L226 Difference]: Without dead ends: 31917 [2020-10-29 04:56:44,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:56:44,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31917 states. [2020-10-29 04:56:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31917 to 31666. [2020-10-29 04:56:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31666 states. [2020-10-29 04:56:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31666 states to 31666 states and 51266 transitions. [2020-10-29 04:56:45,626 INFO L78 Accepts]: Start accepts. Automaton has 31666 states and 51266 transitions. Word has length 269 [2020-10-29 04:56:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:45,627 INFO L481 AbstractCegarLoop]: Abstraction has 31666 states and 51266 transitions. [2020-10-29 04:56:45,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 31666 states and 51266 transitions. [2020-10-29 04:56:45,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 04:56:45,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:45,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:45,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:45,750 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:45,751 INFO L82 PathProgramCache]: Analyzing trace with hash 932714709, now seen corresponding path program 1 times [2020-10-29 04:56:45,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:45,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277877637] [2020-10-29 04:56:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:50,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 04:56:50,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:50,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 04:56:50,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:50,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 04:56:50,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:56:50,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,125 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:51,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:56:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:56:51,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:56:51,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:56:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:56:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:56:51,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 04:56:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:56:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:56:51,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277877637] [2020-10-29 04:56:51,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:51,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:51,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732798125] [2020-10-29 04:56:51,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:51,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:51,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:51,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:51,612 INFO L87 Difference]: Start difference. First operand 31666 states and 51266 transitions. Second operand 8 states. [2020-10-29 04:56:51,916 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:52,313 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:52,940 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:57,774 INFO L93 Difference]: Finished difference Result 95950 states and 161462 transitions. [2020-10-29 04:56:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:57,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 270 [2020-10-29 04:56:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:58,147 INFO L225 Difference]: With dead ends: 95950 [2020-10-29 04:56:58,147 INFO L226 Difference]: Without dead ends: 64290 [2020-10-29 04:56:58,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:58,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64290 states. [2020-10-29 04:57:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64290 to 64253. [2020-10-29 04:57:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64253 states. [2020-10-29 04:57:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64253 states to 64253 states and 100749 transitions. [2020-10-29 04:57:01,033 INFO L78 Accepts]: Start accepts. Automaton has 64253 states and 100749 transitions. Word has length 270 [2020-10-29 04:57:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:01,034 INFO L481 AbstractCegarLoop]: Abstraction has 64253 states and 100749 transitions. [2020-10-29 04:57:01,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:57:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 64253 states and 100749 transitions. [2020-10-29 04:57:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 04:57:01,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:01,203 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:01,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:57:01,203 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:01,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash 34424165, now seen corresponding path program 1 times [2020-10-29 04:57:01,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:01,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456149016] [2020-10-29 04:57:01,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:01,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-29 04:57:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:57:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:57:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,643 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:06,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:57:06,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:57:06,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-29 04:57:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-29 04:57:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:06,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:06,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:06,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:57:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:06,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 04:57:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:07,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:07,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:57:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-29 04:57:07,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456149016] [2020-10-29 04:57:07,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:07,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:07,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906449280] [2020-10-29 04:57:07,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:07,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:07,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:07,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:07,461 INFO L87 Difference]: Start difference. First operand 64253 states and 100749 transitions. Second operand 7 states. [2020-10-29 04:57:07,906 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:10,441 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:13,185 INFO L93 Difference]: Finished difference Result 135641 states and 235460 transitions. [2020-10-29 04:57:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:13,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-29 04:57:13,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:14,230 INFO L225 Difference]: With dead ends: 135641 [2020-10-29 04:57:14,230 INFO L226 Difference]: Without dead ends: 71394 [2020-10-29 04:57:14,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:57:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71394 states. [2020-10-29 04:57:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71394 to 69835. [2020-10-29 04:57:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69835 states. [2020-10-29 04:57:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69835 states to 69835 states and 108393 transitions. [2020-10-29 04:57:18,255 INFO L78 Accepts]: Start accepts. Automaton has 69835 states and 108393 transitions. Word has length 302 [2020-10-29 04:57:18,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:18,255 INFO L481 AbstractCegarLoop]: Abstraction has 69835 states and 108393 transitions. [2020-10-29 04:57:18,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 69835 states and 108393 transitions. [2020-10-29 04:57:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-29 04:57:18,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:18,619 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:18,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:57:18,620 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:18,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:18,620 INFO L82 PathProgramCache]: Analyzing trace with hash -634088185, now seen corresponding path program 1 times [2020-10-29 04:57:18,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:18,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002311072] [2020-10-29 04:57:18,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:18,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:23,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:23,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-29 04:57:23,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 04:57:23,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:23,977 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:23,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:23,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:57:24,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:57:24,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:57:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:24,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:57:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 04:57:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:24,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:24,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:57:24,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-29 04:57:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:24,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:24,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 04:57:24,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 203 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-29 04:57:24,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002311072] [2020-10-29 04:57:24,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:24,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:24,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456235282] [2020-10-29 04:57:24,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:24,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:24,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:24,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:24,678 INFO L87 Difference]: Start difference. First operand 69835 states and 108393 transitions. Second operand 7 states. [2020-10-29 04:57:24,930 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:27,691 INFO L93 Difference]: Finished difference Result 132195 states and 204600 transitions. [2020-10-29 04:57:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:57:27,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-10-29 04:57:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:27,883 INFO L225 Difference]: With dead ends: 132195 [2020-10-29 04:57:27,883 INFO L226 Difference]: Without dead ends: 62366 [2020-10-29 04:57:27,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:57:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62366 states. [2020-10-29 04:57:30,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62366 to 62346. [2020-10-29 04:57:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62346 states. [2020-10-29 04:57:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62346 states to 62346 states and 94063 transitions. [2020-10-29 04:57:30,295 INFO L78 Accepts]: Start accepts. Automaton has 62346 states and 94063 transitions. Word has length 327 [2020-10-29 04:57:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:30,295 INFO L481 AbstractCegarLoop]: Abstraction has 62346 states and 94063 transitions. [2020-10-29 04:57:30,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 62346 states and 94063 transitions. [2020-10-29 04:57:30,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-29 04:57:30,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:30,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:57:30,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:57:30,805 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:30,806 INFO L82 PathProgramCache]: Analyzing trace with hash 266865880, now seen corresponding path program 1 times [2020-10-29 04:57:30,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:30,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746503543] [2020-10-29 04:57:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:30,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:31,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 04:57:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,184 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:36,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:36,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:36,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 04:57:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-29 04:57:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 04:57:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 147 proven. 29 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 04:57:36,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746503543] [2020-10-29 04:57:36,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:36,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:36,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757541397] [2020-10-29 04:57:36,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:36,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:36,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:36,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:36,909 INFO L87 Difference]: Start difference. First operand 62346 states and 94063 transitions. Second operand 7 states. [2020-10-29 04:57:37,163 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:40,105 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:57:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:41,969 INFO L93 Difference]: Finished difference Result 152379 states and 236534 transitions. [2020-10-29 04:57:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:57:41,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-29 04:57:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:42,288 INFO L225 Difference]: With dead ends: 152379 [2020-10-29 04:57:42,289 INFO L226 Difference]: Without dead ends: 90039 [2020-10-29 04:57:42,573 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 [2020-10-29 04:57:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90039 states. [2020-10-29 04:57:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90039 to 89459. [2020-10-29 04:57:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89459 states. [2020-10-29 04:57:45,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89459 states to 89459 states and 134833 transitions. [2020-10-29 04:57:45,333 INFO L78 Accepts]: Start accepts. Automaton has 89459 states and 134833 transitions. Word has length 351 [2020-10-29 04:57:45,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:45,333 INFO L481 AbstractCegarLoop]: Abstraction has 89459 states and 134833 transitions. [2020-10-29 04:57:45,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:45,333 INFO L276 IsEmpty]: Start isEmpty. Operand 89459 states and 134833 transitions. [2020-10-29 04:57:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-29 04:57:45,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:45,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 04:57:45,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:45,529 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:45,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:45,529 INFO L82 PathProgramCache]: Analyzing trace with hash 871336011, now seen corresponding path program 1 times [2020-10-29 04:57:45,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:45,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658164727] [2020-10-29 04:57:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:45,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:50,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 04:57:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:50,990 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:57:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:51,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-29 04:57:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:51,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:57:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 158 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-29 04:57:51,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658164727] [2020-10-29 04:57:51,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:51,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:57:51,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710389352] [2020-10-29 04:57:51,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:57:51,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:51,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:57:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:57:51,411 INFO L87 Difference]: Start difference. First operand 89459 states and 134833 transitions. Second operand 5 states. [2020-10-29 04:57:51,817 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:54,913 INFO L93 Difference]: Finished difference Result 158361 states and 240004 transitions. [2020-10-29 04:57:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:57:54,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-29 04:57:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:54,917 INFO L225 Difference]: With dead ends: 158361 [2020-10-29 04:57:54,917 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 04:57:55,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:57:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 04:57:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 04:57:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 04:57:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 04:57:55,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 362 [2020-10-29 04:57:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:55,089 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 04:57:55,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:57:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 04:57:55,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 04:57:55,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:57:55,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 04:57:56,295 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-29 04:57:57,408 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-29 04:58:05,866 WARN L193 SmtUtils]: Spent 5.10 s on a formula simplification. DAG size of input: 1652 DAG size of output: 385 [2020-10-29 04:58:09,875 WARN L193 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 1646 DAG size of output: 385 [2020-10-29 04:58:11,166 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 123