/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:48:39,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:48:39,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:48:39,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:48:39,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:48:39,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:48:39,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:48:39,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:48:39,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:48:39,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:48:39,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:48:39,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:48:39,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:48:39,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:48:39,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:48:39,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:48:39,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:48:39,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:48:39,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:48:39,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:48:39,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:48:39,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:48:39,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:48:39,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:48:39,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:48:39,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:48:39,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:48:39,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:48:39,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:48:39,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:48:39,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:48:39,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:48:39,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:48:39,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:48:39,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:48:39,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:48:39,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:48:39,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:48:39,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:48:39,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:48:39,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:48:39,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:48:39,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:48:39,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:48:39,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:48:39,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:48:39,887 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:48:39,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:48:39,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:48:39,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:48:39,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:48:39,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:48:39,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:48:39,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:48:39,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:48:39,891 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:48:39,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:48:39,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:48:39,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:48:39,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:48:39,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:48:39,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:48:39,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:48:39,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:48:39,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:48:39,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:48:39,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:48:39,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:48:39,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:48:39,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:48:39,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:48:39,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:48:40,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:48:40,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:48:40,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:48:40,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:48:40,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:48:40,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label55.c [2020-10-26 23:48:40,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec830097/a7a3f0450c8a4453b1d3074db44afb18/FLAG7f9f4ef8b [2020-10-26 23:48:41,221 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:48:41,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label55.c [2020-10-26 23:48:41,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec830097/a7a3f0450c8a4453b1d3074db44afb18/FLAG7f9f4ef8b [2020-10-26 23:48:41,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ec830097/a7a3f0450c8a4453b1d3074db44afb18 [2020-10-26 23:48:41,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:48:41,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:48:41,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:41,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:48:41,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:48:41,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:41" (1/1) ... [2020-10-26 23:48:41,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242517b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:41, skipping insertion in model container [2020-10-26 23:48:41,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:48:41" (1/1) ... [2020-10-26 23:48:41,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:48:41,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:48:42,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:42,412 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:48:42,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:48:42,745 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:48:42,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42 WrapperNode [2020-10-26 23:48:42,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:48:42,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:48:42,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:48:42,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:48:42,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... [2020-10-26 23:48:42,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:48:42,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:48:42,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:48:42,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:48:42,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:48:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:48:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:48:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:48:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:48:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:48:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:48:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:48:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:48:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:48:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:48:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:48:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:48:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:48:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:48:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:48:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:48:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:48:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:48:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:48:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:48:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:48:46,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:48:46,737 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:48:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:46 BoogieIcfgContainer [2020-10-26 23:48:46,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:48:46,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:48:46,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:48:46,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:48:46,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:48:41" (1/3) ... [2020-10-26 23:48:46,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d3c3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:46, skipping insertion in model container [2020-10-26 23:48:46,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:48:42" (2/3) ... [2020-10-26 23:48:46,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d3c3a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:48:46, skipping insertion in model container [2020-10-26 23:48:46,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:48:46" (3/3) ... [2020-10-26 23:48:46,760 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label55.c [2020-10-26 23:48:46,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:48:46,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:48:46,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:48:46,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:48:46,823 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:48:46,823 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:48:46,823 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:48:46,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:48:46,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:48:46,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:48:46,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:48:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:48:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-26 23:48:46,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:46,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:46,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:46,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1173719311, now seen corresponding path program 1 times [2020-10-26 23:48:46,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:46,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180608944] [2020-10-26 23:48:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:47,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:47,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:48:47,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:47,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-26 23:48:47,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-26 23:48:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:48:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:48,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:48,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:48,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:48,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:48:48,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:48,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:48,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:48,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:48,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180608944] [2020-10-26 23:48:48,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:48,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:48:48,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564179367] [2020-10-26 23:48:48,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:48:48,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:48,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:48:48,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:48:48,122 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:48:53,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:53,551 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-26 23:48:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:48:53,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-26 23:48:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:53,575 INFO L225 Difference]: With dead ends: 1250 [2020-10-26 23:48:53,575 INFO L226 Difference]: Without dead ends: 730 [2020-10-26 23:48:53,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:48:53,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-26 23:48:53,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-26 23:48:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-26 23:48:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-26 23:48:53,713 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 64 [2020-10-26 23:48:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:53,714 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-26 23:48:53,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:48:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-26 23:48:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-26 23:48:53,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:53,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:53,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:48:53,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:53,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:53,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1604006, now seen corresponding path program 1 times [2020-10-26 23:48:53,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:53,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408391627] [2020-10-26 23:48:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-26 23:48:58,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4197 [2020-10-26 23:48:58,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:58,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:58,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:48:58,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:58,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:48:58,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:58,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:48:58,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:48:58,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:48:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:48:58,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408391627] [2020-10-26 23:48:58,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:48:58,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:48:58,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031146026] [2020-10-26 23:48:58,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:58,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:58,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:58,482 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-26 23:49:07,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:07,563 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-26 23:49:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:49:07,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-26 23:49:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:07,573 INFO L225 Difference]: With dead ends: 1776 [2020-10-26 23:49:07,573 INFO L226 Difference]: Without dead ends: 1069 [2020-10-26 23:49:07,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-26 23:49:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-26 23:49:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:49:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-26 23:49:07,652 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 133 [2020-10-26 23:49:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:07,655 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-26 23:49:07,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:07,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-26 23:49:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 23:49:07,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:07,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:07,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:49:07,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:07,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash 560058730, now seen corresponding path program 1 times [2020-10-26 23:49:07,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:07,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301960644] [2020-10-26 23:49:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:49:09,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:49:09,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-26 23:49:09,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:49:09,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:09,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-26 23:49:09,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:09,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:09,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:49:09,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:09,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:49:09,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-26 23:49:09,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:49:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:49:09,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301960644] [2020-10-26 23:49:09,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:09,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:49:09,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228391398] [2020-10-26 23:49:09,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:49:09,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:09,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:49:09,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:49:09,654 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 6 states. [2020-10-26 23:49:15,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:15,947 INFO L93 Difference]: Finished difference Result 2743 states and 4533 transitions. [2020-10-26 23:49:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:49:15,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-26 23:49:15,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:15,964 INFO L225 Difference]: With dead ends: 2743 [2020-10-26 23:49:15,964 INFO L226 Difference]: Without dead ends: 1707 [2020-10-26 23:49:15,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:49:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-10-26 23:49:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1684. [2020-10-26 23:49:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-10-26 23:49:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2355 transitions. [2020-10-26 23:49:16,045 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2355 transitions. Word has length 134 [2020-10-26 23:49:16,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:16,046 INFO L481 AbstractCegarLoop]: Abstraction has 1684 states and 2355 transitions. [2020-10-26 23:49:16,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:49:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2355 transitions. [2020-10-26 23:49:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-26 23:49:16,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:16,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:16,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:49:16,050 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash 947551363, now seen corresponding path program 1 times [2020-10-26 23:49:16,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:16,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91572035] [2020-10-26 23:49:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-26 23:49:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:49:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:49:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:17,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:17,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:49:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:49:17,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91572035] [2020-10-26 23:49:17,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:49:17,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:49:17,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620005146] [2020-10-26 23:49:17,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:17,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:17,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:17,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:17,812 INFO L87 Difference]: Start difference. First operand 1684 states and 2355 transitions. Second operand 7 states. [2020-10-26 23:49:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:27,039 INFO L93 Difference]: Finished difference Result 4364 states and 6352 transitions. [2020-10-26 23:49:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:49:27,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-26 23:49:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:27,066 INFO L225 Difference]: With dead ends: 4364 [2020-10-26 23:49:27,066 INFO L226 Difference]: Without dead ends: 2993 [2020-10-26 23:49:27,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:49:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2020-10-26 23:49:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2309. [2020-10-26 23:49:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-10-26 23:49:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3070 transitions. [2020-10-26 23:49:27,176 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3070 transitions. Word has length 150 [2020-10-26 23:49:27,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:27,177 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 3070 transitions. [2020-10-26 23:49:27,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3070 transitions. [2020-10-26 23:49:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-26 23:49:27,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:27,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:27,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:49:27,185 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash -623186626, now seen corresponding path program 1 times [2020-10-26 23:49:27,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:27,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581915617] [2020-10-26 23:49:27,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:27,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:29,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:29,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2030 [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:29,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 341 [2020-10-26 23:49:29,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:29,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:29,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:29,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:49:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:49:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:49:30,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581915617] [2020-10-26 23:49:30,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:30,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:49:30,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995745648] [2020-10-26 23:49:30,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:49:30,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:49:30,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:49:30,476 INFO L87 Difference]: Start difference. First operand 2309 states and 3070 transitions. Second operand 6 states. [2020-10-26 23:49:37,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:37,330 INFO L93 Difference]: Finished difference Result 3277 states and 4204 transitions. [2020-10-26 23:49:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:49:37,338 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 338 [2020-10-26 23:49:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:37,356 INFO L225 Difference]: With dead ends: 3277 [2020-10-26 23:49:37,356 INFO L226 Difference]: Without dead ends: 3274 [2020-10-26 23:49:37,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:49:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2020-10-26 23:49:37,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3242. [2020-10-26 23:49:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2020-10-26 23:49:37,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4149 transitions. [2020-10-26 23:49:37,454 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4149 transitions. Word has length 338 [2020-10-26 23:49:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:37,455 INFO L481 AbstractCegarLoop]: Abstraction has 3242 states and 4149 transitions. [2020-10-26 23:49:37,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:49:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4149 transitions. [2020-10-26 23:49:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2020-10-26 23:49:37,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:37,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:37,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:49:37,465 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:37,466 INFO L82 PathProgramCache]: Analyzing trace with hash 144949627, now seen corresponding path program 1 times [2020-10-26 23:49:37,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:37,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47396874] [2020-10-26 23:49:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-26 23:49:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-26 23:49:42,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:49:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:49:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:49:42,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:42,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:42,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:42,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:42,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:49:42,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:49:43,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-26 23:49:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:49:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:49:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:49:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:44,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-26 23:49:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:49:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 114 proven. 117 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:49:44,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47396874] [2020-10-26 23:49:44,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:44,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:49:44,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125328263] [2020-10-26 23:49:44,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:49:44,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:49:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:49:44,697 INFO L87 Difference]: Start difference. First operand 3242 states and 4149 transitions. Second operand 8 states. [2020-10-26 23:49:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:57,317 INFO L93 Difference]: Finished difference Result 7473 states and 10027 transitions. [2020-10-26 23:49:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:49:57,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 390 [2020-10-26 23:49:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:57,341 INFO L225 Difference]: With dead ends: 7473 [2020-10-26 23:49:57,341 INFO L226 Difference]: Without dead ends: 4544 [2020-10-26 23:49:57,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:49:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2020-10-26 23:49:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4509. [2020-10-26 23:49:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4509 states. [2020-10-26 23:49:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4509 states to 4509 states and 5876 transitions. [2020-10-26 23:49:57,467 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 5876 transitions. Word has length 390 [2020-10-26 23:49:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:57,468 INFO L481 AbstractCegarLoop]: Abstraction has 4509 states and 5876 transitions. [2020-10-26 23:49:57,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:49:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 5876 transitions. [2020-10-26 23:49:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-26 23:49:57,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:57,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:57,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:49:57,480 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:57,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1777033583, now seen corresponding path program 1 times [2020-10-26 23:49:57,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:57,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87823282] [2020-10-26 23:49:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:57,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:02,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-26 23:50:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:50:02,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-26 23:50:02,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:50:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:50:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 438 [2020-10-26 23:50:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:50:02,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:02,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:03,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:03,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:50:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:50:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:03,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:04,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:04,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:50:04,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-26 23:50:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:50:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:04,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:50:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 52 proven. 151 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:50:06,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87823282] [2020-10-26 23:50:06,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:06,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:50:06,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775705161] [2020-10-26 23:50:06,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:50:06,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:50:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:06,021 INFO L87 Difference]: Start difference. First operand 4509 states and 5876 transitions. Second operand 12 states. [2020-10-26 23:50:06,255 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2020-10-26 23:50:07,474 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-26 23:50:07,787 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-26 23:50:07,960 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 23:50:08,236 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-10-26 23:50:09,422 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-26 23:50:09,743 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-26 23:50:09,934 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-26 23:50:10,230 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-26 23:50:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:20,729 INFO L93 Difference]: Finished difference Result 6378 states and 9047 transitions. [2020-10-26 23:50:20,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:50:20,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 433 [2020-10-26 23:50:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:20,759 INFO L225 Difference]: With dead ends: 6378 [2020-10-26 23:50:20,759 INFO L226 Difference]: Without dead ends: 6375 [2020-10-26 23:50:20,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:50:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2020-10-26 23:50:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 5134. [2020-10-26 23:50:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5134 states. [2020-10-26 23:50:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 6946 transitions. [2020-10-26 23:50:20,953 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 6946 transitions. Word has length 433 [2020-10-26 23:50:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:20,954 INFO L481 AbstractCegarLoop]: Abstraction has 5134 states and 6946 transitions. [2020-10-26 23:50:20,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:50:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 6946 transitions. [2020-10-26 23:50:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-10-26 23:50:20,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:20,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:50:20,972 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2031392682, now seen corresponding path program 1 times [2020-10-26 23:50:20,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:20,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356845193] [2020-10-26 23:50:20,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-26 23:50:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:50:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:50:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:50:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:50:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:26,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:26,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:26,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:50:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:50:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:26,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:50:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:26,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:50:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:50:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:50:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 23:50:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:50:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 253 proven. 75 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 23:50:27,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356845193] [2020-10-26 23:50:27,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:27,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:50:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304172733] [2020-10-26 23:50:27,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:50:27,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:27,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:50:27,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:50:27,130 INFO L87 Difference]: Start difference. First operand 5134 states and 6946 transitions. Second operand 8 states. [2020-10-26 23:50:29,516 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-26 23:50:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:40,113 INFO L93 Difference]: Finished difference Result 11572 states and 16095 transitions. [2020-10-26 23:50:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 23:50:40,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 517 [2020-10-26 23:50:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:40,144 INFO L225 Difference]: With dead ends: 11572 [2020-10-26 23:50:40,144 INFO L226 Difference]: Without dead ends: 6751 [2020-10-26 23:50:40,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:50:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2020-10-26 23:50:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 6425. [2020-10-26 23:50:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6425 states. [2020-10-26 23:50:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 8040 transitions. [2020-10-26 23:50:40,335 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 8040 transitions. Word has length 517 [2020-10-26 23:50:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:40,336 INFO L481 AbstractCegarLoop]: Abstraction has 6425 states and 8040 transitions. [2020-10-26 23:50:40,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:50:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 8040 transitions. [2020-10-26 23:50:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-26 23:50:40,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:40,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:40,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:50:40,357 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1002255395, now seen corresponding path program 1 times [2020-10-26 23:50:40,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:40,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821573947] [2020-10-26 23:50:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:40,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:50:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-26 23:50:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:50:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:50:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:45,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:50:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:50:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:46,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:46,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:50:46,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:50:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-26 23:50:46,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:50:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:50:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:50:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:50:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:50:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:50:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:46,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:46,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:50:46,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-26 23:50:46,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:50:46,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:50:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 324 proven. 177 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-26 23:50:47,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821573947] [2020-10-26 23:50:47,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:50:47,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:50:47,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137798701] [2020-10-26 23:50:47,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:50:47,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:50:47,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:50:47,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:50:47,133 INFO L87 Difference]: Start difference. First operand 6425 states and 8040 transitions. Second operand 7 states. [2020-10-26 23:50:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:50:57,901 INFO L93 Difference]: Finished difference Result 11462 states and 14747 transitions. [2020-10-26 23:50:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:50:57,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 540 [2020-10-26 23:50:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:50:57,925 INFO L225 Difference]: With dead ends: 11462 [2020-10-26 23:50:57,925 INFO L226 Difference]: Without dead ends: 6508 [2020-10-26 23:50:57,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:50:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2020-10-26 23:50:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 6443. [2020-10-26 23:50:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6443 states. [2020-10-26 23:50:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6443 states to 6443 states and 8042 transitions. [2020-10-26 23:50:58,107 INFO L78 Accepts]: Start accepts. Automaton has 6443 states and 8042 transitions. Word has length 540 [2020-10-26 23:50:58,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:50:58,107 INFO L481 AbstractCegarLoop]: Abstraction has 6443 states and 8042 transitions. [2020-10-26 23:50:58,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:50:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6443 states and 8042 transitions. [2020-10-26 23:50:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2020-10-26 23:50:58,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:50:58,118 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:50:58,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:50:58,119 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:50:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:50:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2061730209, now seen corresponding path program 1 times [2020-10-26 23:50:58,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:50:58,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622556287] [2020-10-26 23:50:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:50:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:50:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:50:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-26 23:51:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:51:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:51:03,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:51:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:51:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:51:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:51:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:51:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:51:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:04,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:51:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:04,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-26 23:51:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:04,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 280 proven. 96 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-26 23:51:04,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622556287] [2020-10-26 23:51:04,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:04,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:04,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751057553] [2020-10-26 23:51:04,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:04,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:04,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:04,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:04,361 INFO L87 Difference]: Start difference. First operand 6443 states and 8042 transitions. Second operand 7 states. [2020-10-26 23:51:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:16,306 INFO L93 Difference]: Finished difference Result 14229 states and 17871 transitions. [2020-10-26 23:51:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:51:16,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 548 [2020-10-26 23:51:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:16,334 INFO L225 Difference]: With dead ends: 14229 [2020-10-26 23:51:16,334 INFO L226 Difference]: Without dead ends: 8099 [2020-10-26 23:51:16,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:51:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8099 states. [2020-10-26 23:51:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8099 to 8036. [2020-10-26 23:51:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8036 states. [2020-10-26 23:51:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8036 states to 8036 states and 9825 transitions. [2020-10-26 23:51:16,536 INFO L78 Accepts]: Start accepts. Automaton has 8036 states and 9825 transitions. Word has length 548 [2020-10-26 23:51:16,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:16,537 INFO L481 AbstractCegarLoop]: Abstraction has 8036 states and 9825 transitions. [2020-10-26 23:51:16,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 8036 states and 9825 transitions. [2020-10-26 23:51:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-26 23:51:16,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:16,548 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:16,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:51:16,548 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:16,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:16,549 INFO L82 PathProgramCache]: Analyzing trace with hash 786779674, now seen corresponding path program 1 times [2020-10-26 23:51:16,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:16,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700301419] [2020-10-26 23:51:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:16,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:20,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:20,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-26 23:51:20,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:51:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3531 [2020-10-26 23:51:20,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:51:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:20,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:20,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:20,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:20,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:20,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:20,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:20,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:20,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:20,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:20,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:20,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:51:20,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 23:51:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:51:21,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700301419] [2020-10-26 23:51:21,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:21,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902934760] [2020-10-26 23:51:21,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:21,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:21,048 INFO L87 Difference]: Start difference. First operand 8036 states and 9825 transitions. Second operand 7 states. [2020-10-26 23:51:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:33,937 INFO L93 Difference]: Finished difference Result 18132 states and 23364 transitions. [2020-10-26 23:51:33,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:33,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 562 [2020-10-26 23:51:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:33,987 INFO L225 Difference]: With dead ends: 18132 [2020-10-26 23:51:33,987 INFO L226 Difference]: Without dead ends: 11326 [2020-10-26 23:51:34,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2020-10-26 23:51:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 10652. [2020-10-26 23:51:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10652 states. [2020-10-26 23:51:34,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 13172 transitions. [2020-10-26 23:51:34,273 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 13172 transitions. Word has length 562 [2020-10-26 23:51:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:34,275 INFO L481 AbstractCegarLoop]: Abstraction has 10652 states and 13172 transitions. [2020-10-26 23:51:34,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 13172 transitions. [2020-10-26 23:51:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2020-10-26 23:51:34,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:34,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:34,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:51:34,288 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:34,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1242967122, now seen corresponding path program 1 times [2020-10-26 23:51:34,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:34,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582143774] [2020-10-26 23:51:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:34,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:35,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 583 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4303 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:51:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:38,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:39,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:39,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:39,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:39,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:39,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:51:39,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:51:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 379 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:51:39,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582143774] [2020-10-26 23:51:39,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152595360] [2020-10-26 23:51:39,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:39,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:39,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:39,612 INFO L87 Difference]: Start difference. First operand 10652 states and 13172 transitions. Second operand 7 states. [2020-10-26 23:51:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:51:51,044 INFO L93 Difference]: Finished difference Result 23236 states and 29433 transitions. [2020-10-26 23:51:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:51:51,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 567 [2020-10-26 23:51:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:51:51,088 INFO L225 Difference]: With dead ends: 23236 [2020-10-26 23:51:51,088 INFO L226 Difference]: Without dead ends: 12897 [2020-10-26 23:51:51,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:51:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12897 states. [2020-10-26 23:51:51,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12897 to 12567. [2020-10-26 23:51:51,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12567 states. [2020-10-26 23:51:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12567 states to 12567 states and 15497 transitions. [2020-10-26 23:51:51,416 INFO L78 Accepts]: Start accepts. Automaton has 12567 states and 15497 transitions. Word has length 567 [2020-10-26 23:51:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:51:51,418 INFO L481 AbstractCegarLoop]: Abstraction has 12567 states and 15497 transitions. [2020-10-26 23:51:51,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:51:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 12567 states and 15497 transitions. [2020-10-26 23:51:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-10-26 23:51:51,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:51:51,429 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:51:51,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:51:51,429 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:51:51,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:51:51,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1627494730, now seen corresponding path program 1 times [2020-10-26 23:51:51,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:51:51,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662023753] [2020-10-26 23:51:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:51:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:55,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 605 [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3379 [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:51:55,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:51:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:51:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:51:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:55,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:51:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:51:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:55,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:51:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:51:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:51:55,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:51:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:51:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:51:55,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:51:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:51:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:51:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 406 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:51:56,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662023753] [2020-10-26 23:51:56,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:51:56,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:51:56,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94782717] [2020-10-26 23:51:56,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:51:56,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:51:56,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:51:56,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:51:56,015 INFO L87 Difference]: Start difference. First operand 12567 states and 15497 transitions. Second operand 7 states. [2020-10-26 23:52:10,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:52:10,544 INFO L93 Difference]: Finished difference Result 27307 states and 35106 transitions. [2020-10-26 23:52:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:52:10,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 589 [2020-10-26 23:52:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:52:10,595 INFO L225 Difference]: With dead ends: 27307 [2020-10-26 23:52:10,595 INFO L226 Difference]: Without dead ends: 19094 [2020-10-26 23:52:10,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:52:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19094 states. [2020-10-26 23:52:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19094 to 18159. [2020-10-26 23:52:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18159 states. [2020-10-26 23:52:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18159 states to 18159 states and 22411 transitions. [2020-10-26 23:52:11,036 INFO L78 Accepts]: Start accepts. Automaton has 18159 states and 22411 transitions. Word has length 589 [2020-10-26 23:52:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:52:11,037 INFO L481 AbstractCegarLoop]: Abstraction has 18159 states and 22411 transitions. [2020-10-26 23:52:11,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:52:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 18159 states and 22411 transitions. [2020-10-26 23:52:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-26 23:52:11,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:52:11,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:52:11,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:52:11,061 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:52:11,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:52:11,062 INFO L82 PathProgramCache]: Analyzing trace with hash 973323286, now seen corresponding path program 1 times [2020-10-26 23:52:11,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:52:11,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526002619] [2020-10-26 23:52:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:52:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:11,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:16,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:16,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 729 [2020-10-26 23:52:16,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:52:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:52:16,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:52:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:52:16,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-26 23:52:16,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:52:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:16,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:52:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:52:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:52:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:17,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:17,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:52:17,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:52:17,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:52:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:17,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:52:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:17,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:52:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:17,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:17,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:17,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:52:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:52:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:52:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:52:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-26 23:52:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:17,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-26 23:52:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:52:17,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:52:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-26 23:52:17,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:52:17,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:52:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 490 proven. 304 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-26 23:52:18,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526002619] [2020-10-26 23:52:18,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:52:18,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:52:18,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773489805] [2020-10-26 23:52:18,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:52:18,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:52:18,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:52:18,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:52:18,048 INFO L87 Difference]: Start difference. First operand 18159 states and 22411 transitions. Second operand 10 states.