/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/Problem17_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:22:28,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:22:28,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:22:28,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:22:28,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:22:28,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:22:28,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:22:28,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:22:28,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:22:28,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:22:28,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:22:28,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:22:28,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:22:28,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:22:28,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:22:28,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:22:28,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:22:28,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:22:28,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:22:28,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:22:28,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:22:28,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:22:28,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:22:28,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:22:28,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:22:28,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:22:28,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:22:29,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:22:29,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:22:29,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:22:29,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:22:29,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:22:29,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:22:29,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:22:29,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:22:29,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:22:29,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:22:29,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:22:29,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:22:29,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:22:29,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:22:29,017 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 08:22:29,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:22:29,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:22:29,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:22:29,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:22:29,073 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:22:29,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:22:29,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:22:29,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:22:29,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:22:29,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:22:29,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:22:29,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:22:29,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:22:29,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:22:29,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:22:29,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:22:29,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:22:29,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:22:29,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:22:29,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:22:29,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:22:29,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:29,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:22:29,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:22:29,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:22:29,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:22:29,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:22:29,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:22:29,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:22:29,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:22:29,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:22:29,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:22:29,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:22:29,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:22:29,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:22:29,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-29 08:22:29,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae7703e3f/146143a1b74a432193d7164f235f2bab/FLAG73cdffdb7 [2020-10-29 08:22:30,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:22:30,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label47.c [2020-10-29 08:22:30,499 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae7703e3f/146143a1b74a432193d7164f235f2bab/FLAG73cdffdb7 [2020-10-29 08:22:30,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae7703e3f/146143a1b74a432193d7164f235f2bab [2020-10-29 08:22:30,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:22:30,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:22:30,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:30,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:22:30,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:22:30,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:30" (1/1) ... [2020-10-29 08:22:30,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d8493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:30, skipping insertion in model container [2020-10-29 08:22:30,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:22:30" (1/1) ... [2020-10-29 08:22:30,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:22:30,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:22:31,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:31,891 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:22:32,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:22:32,413 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:22:32,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32 WrapperNode [2020-10-29 08:22:32,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:22:32,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:22:32,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:22:32,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:22:32,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... [2020-10-29 08:22:32,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:22:32,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:22:32,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:22:32,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:22:32,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:22:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:22:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:22:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:22:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:22:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:22:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:22:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:22:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:22:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:22:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:22:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:22:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:22:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:22:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:22:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:22:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:22:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:22:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:22:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:22:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:22:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:22:41,983 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:22:41,984 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:22:41,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:41 BoogieIcfgContainer [2020-10-29 08:22:41,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:22:41,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:22:41,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:22:41,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:22:41,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:22:30" (1/3) ... [2020-10-29 08:22:41,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4d5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:41, skipping insertion in model container [2020-10-29 08:22:41,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:22:32" (2/3) ... [2020-10-29 08:22:41,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4d5b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:22:41, skipping insertion in model container [2020-10-29 08:22:41,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:22:41" (3/3) ... [2020-10-29 08:22:41,995 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label47.c [2020-10-29 08:22:42,007 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:22:42,013 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:22:42,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:22:42,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:22:42,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:22:42,058 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:22:42,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:22:42,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:22:42,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:22:42,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:22:42,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:22:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:22:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 08:22:42,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:42,098 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] [2020-10-29 08:22:42,099 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:42,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:42,105 INFO L82 PathProgramCache]: Analyzing trace with hash 731131835, now seen corresponding path program 1 times [2020-10-29 08:22:42,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:42,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834400518] [2020-10-29 08:22:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:42,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:42,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 08:22:42,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:42,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-29 08:22:42,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:42,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:42,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 08:22:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:22:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:43,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:43,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:22:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:43,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:43,159 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 08:22:43,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834400518] [2020-10-29 08:22:43,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:43,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:22:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765629725] [2020-10-29 08:22:43,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:22:43,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:22:43,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:22:43,191 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:22:54,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:54,800 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-29 08:22:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:22:54,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-29 08:22:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:54,827 INFO L225 Difference]: With dead ends: 1697 [2020-10-29 08:22:54,828 INFO L226 Difference]: Without dead ends: 1013 [2020-10-29 08:22:54,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:22:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-29 08:22:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-29 08:22:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-29 08:22:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-29 08:22:55,020 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 51 [2020-10-29 08:22:55,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:55,022 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-29 08:22:55,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:22:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-29 08:22:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-29 08:22:55,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:55,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:55,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:22:55,040 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2038175430, now seen corresponding path program 1 times [2020-10-29 08:22:55,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:55,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217699173] [2020-10-29 08:22:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 08:22:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:22:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1409 [2020-10-29 08:22:56,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:56,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:56,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:22:56,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:22:56,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:22:56,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:22:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:56,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:56,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:56,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:22:56,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:56,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:22:56,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:56,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:56,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:22:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:22:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:22:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:22:56,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:22:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:22:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:22:56,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:22:56,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:22:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:22:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:22:56,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217699173] [2020-10-29 08:22:56,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:22:56,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:22:56,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944054478] [2020-10-29 08:22:56,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:22:56,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:22:56,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:22:56,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:22:56,958 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-29 08:23:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:10,403 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-29 08:23:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:10,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-29 08:23:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:10,418 INFO L225 Difference]: With dead ends: 2964 [2020-10-29 08:23:10,418 INFO L226 Difference]: Without dead ends: 1967 [2020-10-29 08:23:10,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-29 08:23:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-29 08:23:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-29 08:23:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-29 08:23:10,505 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 122 [2020-10-29 08:23:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:10,506 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-29 08:23:10,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-29 08:23:10,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 08:23:10,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:10,509 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:10,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:23:10,510 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1953755857, now seen corresponding path program 1 times [2020-10-29 08:23:10,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:10,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598378700] [2020-10-29 08:23:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:10,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:11,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:11,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 08:23:11,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-29 08:23:11,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:11,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:23:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:23:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:23:11,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:12,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:23:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:12,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:12,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:23:12,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:12,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 08:23:12,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:12,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:12,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:23:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:12,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:23:12,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:23:12,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598378700] [2020-10-29 08:23:12,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:12,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:23:12,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929644236] [2020-10-29 08:23:12,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:23:12,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:12,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:23:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:23:12,461 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 8 states. [2020-10-29 08:23:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:36,832 INFO L93 Difference]: Finished difference Result 7490 states and 9841 transitions. [2020-10-29 08:23:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:23:36,833 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 125 [2020-10-29 08:23:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:36,865 INFO L225 Difference]: With dead ends: 7490 [2020-10-29 08:23:36,866 INFO L226 Difference]: Without dead ends: 4693 [2020-10-29 08:23:36,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-10-29 08:23:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4649. [2020-10-29 08:23:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4649 states. [2020-10-29 08:23:37,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 5874 transitions. [2020-10-29 08:23:37,054 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 5874 transitions. Word has length 125 [2020-10-29 08:23:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:37,056 INFO L481 AbstractCegarLoop]: Abstraction has 4649 states and 5874 transitions. [2020-10-29 08:23:37,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:23:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 5874 transitions. [2020-10-29 08:23:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-29 08:23:37,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:37,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-29 08:23:37,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:23:37,067 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:37,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1011831721, now seen corresponding path program 1 times [2020-10-29 08:23:37,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:37,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306940599] [2020-10-29 08:23:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:38,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 08:23:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-10-29 08:23:38,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:38,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:23:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:38,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:38,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:38,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:38,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:38,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:38,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:38,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:39,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:39,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:23:39,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 08:23:39,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:39,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:39,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:23:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:23:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:23:39,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:23:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:23:39,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306940599] [2020-10-29 08:23:39,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:39,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:23:39,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244292982] [2020-10-29 08:23:39,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:23:39,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:39,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:23:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:23:39,190 INFO L87 Difference]: Start difference. First operand 4649 states and 5874 transitions. Second operand 7 states. [2020-10-29 08:23:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:23:55,214 INFO L93 Difference]: Finished difference Result 11599 states and 15271 transitions. [2020-10-29 08:23:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:23:55,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-29 08:23:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:23:55,250 INFO L225 Difference]: With dead ends: 11599 [2020-10-29 08:23:55,250 INFO L226 Difference]: Without dead ends: 6956 [2020-10-29 08:23:55,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:23:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2020-10-29 08:23:55,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 6920. [2020-10-29 08:23:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6920 states. [2020-10-29 08:23:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 8696 transitions. [2020-10-29 08:23:55,434 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 8696 transitions. Word has length 207 [2020-10-29 08:23:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:23:55,436 INFO L481 AbstractCegarLoop]: Abstraction has 6920 states and 8696 transitions. [2020-10-29 08:23:55,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:23:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 8696 transitions. [2020-10-29 08:23:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 08:23:55,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:23:55,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:23:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:23:55,441 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:23:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:23:55,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2100586445, now seen corresponding path program 1 times [2020-10-29 08:23:55,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:23:55,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911051067] [2020-10-29 08:23:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:23:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:56,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:56,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 08:23:56,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:56,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1189 [2020-10-29 08:23:56,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:56,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:23:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:23:56,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 08:23:56,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:23:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:23:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:23:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:56,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:23:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:23:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:23:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:23:56,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:23:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:23:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:56,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:56,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:23:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:23:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:23:57,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:23:57,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:23:57,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:23:57,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:23:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:23:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:23:57,377 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:23:57,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911051067] [2020-10-29 08:23:57,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:23:57,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:23:57,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060838987] [2020-10-29 08:23:57,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:23:57,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:23:57,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:23:57,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:23:57,380 INFO L87 Difference]: Start difference. First operand 6920 states and 8696 transitions. Second operand 5 states. [2020-10-29 08:24:11,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:11,591 INFO L93 Difference]: Finished difference Result 14292 states and 18277 transitions. [2020-10-29 08:24:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:24:11,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-29 08:24:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:11,628 INFO L225 Difference]: With dead ends: 14292 [2020-10-29 08:24:11,628 INFO L226 Difference]: Without dead ends: 7378 [2020-10-29 08:24:11,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:24:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2020-10-29 08:24:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 7353. [2020-10-29 08:24:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7353 states. [2020-10-29 08:24:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7353 states to 7353 states and 9344 transitions. [2020-10-29 08:24:11,822 INFO L78 Accepts]: Start accepts. Automaton has 7353 states and 9344 transitions. Word has length 224 [2020-10-29 08:24:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:11,822 INFO L481 AbstractCegarLoop]: Abstraction has 7353 states and 9344 transitions. [2020-10-29 08:24:11,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:24:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7353 states and 9344 transitions. [2020-10-29 08:24:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 08:24:11,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:11,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:11,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:24:11,829 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1581946648, now seen corresponding path program 1 times [2020-10-29 08:24:11,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:11,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912957782] [2020-10-29 08:24:11,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:15,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3966 [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:24:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:24:15,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 302 [2020-10-29 08:24:15,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:24:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:24:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:16,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 08:24:16,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:24:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:16,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:24:16,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:16,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:24:16,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:24:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:24:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 08:24:16,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:16,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:24:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-10-29 08:24:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912957782] [2020-10-29 08:24:16,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:16,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:24:16,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542069058] [2020-10-29 08:24:16,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:24:16,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:16,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:24:16,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:24:16,881 INFO L87 Difference]: Start difference. First operand 7353 states and 9344 transitions. Second operand 8 states. [2020-10-29 08:24:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:24:37,048 INFO L93 Difference]: Finished difference Result 19642 states and 25246 transitions. [2020-10-29 08:24:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:24:37,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2020-10-29 08:24:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:24:37,107 INFO L225 Difference]: With dead ends: 19642 [2020-10-29 08:24:37,108 INFO L226 Difference]: Without dead ends: 11848 [2020-10-29 08:24:37,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:24:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2020-10-29 08:24:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 9570. [2020-10-29 08:24:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9570 states. [2020-10-29 08:24:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 11819 transitions. [2020-10-29 08:24:37,400 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 11819 transitions. Word has length 295 [2020-10-29 08:24:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:24:37,401 INFO L481 AbstractCegarLoop]: Abstraction has 9570 states and 11819 transitions. [2020-10-29 08:24:37,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:24:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 11819 transitions. [2020-10-29 08:24:37,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 08:24:37,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:24:37,408 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:24:37,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:24:37,408 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:24:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:24:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 387409057, now seen corresponding path program 1 times [2020-10-29 08:24:37,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:24:37,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509788087] [2020-10-29 08:24:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:24:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:37,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:42,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:42,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-29 08:24:42,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:24:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:42,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:24:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:42,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:42,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:24:42,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:42,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:42,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:24:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:24:42,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:24:42,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:42,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:24:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:24:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:24:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:24:42,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:42,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:24:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:24:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 08:24:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:24:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:24:43,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:24:43,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:24:43,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:24:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 08:24:43,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:24:43,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:24:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:24:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:24:43,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:24:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:24:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:24:43,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509788087] [2020-10-29 08:24:43,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:24:43,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:24:43,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878122809] [2020-10-29 08:24:43,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:24:43,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:24:43,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:24:43,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:24:43,289 INFO L87 Difference]: Start difference. First operand 9570 states and 11819 transitions. Second operand 7 states. [2020-10-29 08:25:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:01,116 INFO L93 Difference]: Finished difference Result 21059 states and 26526 transitions. [2020-10-29 08:25:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:01,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-29 08:25:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:01,159 INFO L225 Difference]: With dead ends: 21059 [2020-10-29 08:25:01,160 INFO L226 Difference]: Without dead ends: 11930 [2020-10-29 08:25:01,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11930 states. [2020-10-29 08:25:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11930 to 11013. [2020-10-29 08:25:01,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11013 states. [2020-10-29 08:25:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 13643 transitions. [2020-10-29 08:25:01,437 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 13643 transitions. Word has length 311 [2020-10-29 08:25:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:01,438 INFO L481 AbstractCegarLoop]: Abstraction has 11013 states and 13643 transitions. [2020-10-29 08:25:01,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 13643 transitions. [2020-10-29 08:25:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 08:25:01,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:01,445 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 08:25:01,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:25:01,446 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:01,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1495231127, now seen corresponding path program 1 times [2020-10-29 08:25:01,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:01,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118817679] [2020-10-29 08:25:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:03,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:06,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:06,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 08:25:06,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 08:25:06,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:06,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:06,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:25:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:06,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:06,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:06,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:06,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:25:06,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:06,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:06,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:06,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:06,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:06,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:06,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:06,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:25:06,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:06,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:06,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:06,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 08:25:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 08:25:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:07,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:25:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 08:25:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:07,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:07,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:07,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:07,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:25:07,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:07,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:25:07,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:07,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 217 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:25:07,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118817679] [2020-10-29 08:25:07,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:07,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:07,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702773153] [2020-10-29 08:25:07,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:07,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:07,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:07,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:07,412 INFO L87 Difference]: Start difference. First operand 11013 states and 13643 transitions. Second operand 7 states. [2020-10-29 08:25:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:27,352 INFO L93 Difference]: Finished difference Result 26921 states and 34767 transitions. [2020-10-29 08:25:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:27,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-29 08:25:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:27,416 INFO L225 Difference]: With dead ends: 26921 [2020-10-29 08:25:27,416 INFO L226 Difference]: Without dead ends: 16349 [2020-10-29 08:25:27,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:25:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2020-10-29 08:25:27,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 15757. [2020-10-29 08:25:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15757 states. [2020-10-29 08:25:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15757 states to 15757 states and 19597 transitions. [2020-10-29 08:25:27,985 INFO L78 Accepts]: Start accepts. Automaton has 15757 states and 19597 transitions. Word has length 315 [2020-10-29 08:25:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:27,986 INFO L481 AbstractCegarLoop]: Abstraction has 15757 states and 19597 transitions. [2020-10-29 08:25:27,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 15757 states and 19597 transitions. [2020-10-29 08:25:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-29 08:25:27,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:27,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:25:27,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:25:27,996 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:27,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:27,997 INFO L82 PathProgramCache]: Analyzing trace with hash -361511513, now seen corresponding path program 1 times [2020-10-29 08:25:27,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:27,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778800769] [2020-10-29 08:25:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:29,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-29 08:25:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 08:25:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:25:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 08:25:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:25:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:33,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:25:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:33,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:33,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:25:33,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:25:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-29 08:25:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:33,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:33,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 08:25:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:33,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 217 proven. 70 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 08:25:34,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778800769] [2020-10-29 08:25:34,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:34,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:25:34,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641438929] [2020-10-29 08:25:34,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:25:34,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:25:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:25:34,039 INFO L87 Difference]: Start difference. First operand 15757 states and 19597 transitions. Second operand 7 states. [2020-10-29 08:25:41,260 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:25:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:25:53,089 INFO L93 Difference]: Finished difference Result 33958 states and 42243 transitions. [2020-10-29 08:25:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:25:53,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-29 08:25:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:25:53,149 INFO L225 Difference]: With dead ends: 33958 [2020-10-29 08:25:53,149 INFO L226 Difference]: Without dead ends: 18642 [2020-10-29 08:25:53,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:25:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18642 states. [2020-10-29 08:25:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18642 to 18024. [2020-10-29 08:25:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18024 states. [2020-10-29 08:25:53,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18024 states to 18024 states and 22264 transitions. [2020-10-29 08:25:53,617 INFO L78 Accepts]: Start accepts. Automaton has 18024 states and 22264 transitions. Word has length 318 [2020-10-29 08:25:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:25:53,618 INFO L481 AbstractCegarLoop]: Abstraction has 18024 states and 22264 transitions. [2020-10-29 08:25:53,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:25:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 18024 states and 22264 transitions. [2020-10-29 08:25:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-29 08:25:53,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:25:53,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:53,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:25:53,626 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:25:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:25:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash -596515321, now seen corresponding path program 1 times [2020-10-29 08:25:53,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:25:53,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142933214] [2020-10-29 08:25:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:25:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:56,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:58,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:58,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-29 08:25:58,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:25:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 08:25:58,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:58,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:25:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:25:58,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 08:25:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:25:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:25:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:25:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:25:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:58,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:25:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:59,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:59,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:59,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:25:59,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:59,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:25:59,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:59,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:25:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:59,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:25:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:25:59,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-29 08:25:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:25:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:25:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:25:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:25:59,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:25:59,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:25:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:25:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 137 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:25:59,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142933214] [2020-10-29 08:25:59,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:25:59,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 08:25:59,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236861861] [2020-10-29 08:25:59,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:25:59,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:25:59,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:25:59,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:25:59,788 INFO L87 Difference]: Start difference. First operand 18024 states and 22264 transitions. Second operand 10 states. [2020-10-29 08:26:08,516 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 08:26:13,711 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 72