/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:29:37,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:29:37,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:29:37,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:29:37,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:29:37,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:29:37,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:29:37,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:29:37,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:29:37,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:29:37,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:29:37,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:29:37,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:29:37,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:29:37,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:29:37,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:29:37,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:29:37,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:29:37,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:29:37,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:29:37,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:29:37,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:29:37,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:29:37,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:29:37,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:29:37,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:29:37,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:29:37,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:29:37,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:29:37,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:29:37,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:29:37,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:29:37,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:29:37,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:29:37,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:29:37,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:29:37,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:29:37,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:29:37,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:29:37,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:29:37,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:29:37,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 10:29:37,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:29:37,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:29:37,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:29:37,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:29:37,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:29:37,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:29:37,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:29:37,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:29:37,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:29:37,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:29:37,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:29:37,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:29:37,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:29:37,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:29:37,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:29:37,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:29:37,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:29:37,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:29:37,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:29:37,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:29:37,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:29:37,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:29:37,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:29:37,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:29:37,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:29:37,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:29:37,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:29:37,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:29:37,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:29:37,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:29:38,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:29:38,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:29:38,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:29:38,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:29:38,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:29:38,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-28 10:29:38,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed932be6d/5124051e709f4933b27cdd6735d0ba96/FLAGa1d80bd96 [2020-10-28 10:29:39,398 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:29:39,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label27.c [2020-10-28 10:29:39,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed932be6d/5124051e709f4933b27cdd6735d0ba96/FLAGa1d80bd96 [2020-10-28 10:29:39,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed932be6d/5124051e709f4933b27cdd6735d0ba96 [2020-10-28 10:29:39,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:29:39,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:29:39,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:29:39,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:29:39,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:29:39,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:29:39" (1/1) ... [2020-10-28 10:29:39,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f0b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:39, skipping insertion in model container [2020-10-28 10:29:39,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:29:39" (1/1) ... [2020-10-28 10:29:39,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:29:40,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:29:41,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:29:41,414 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:29:42,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:29:42,254 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:29:42,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42 WrapperNode [2020-10-28 10:29:42,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:29:42,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:29:42,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:29:42,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:29:42,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (1/1) ... [2020-10-28 10:29:42,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:29:42,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:29:42,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:29:42,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:29:42,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (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 [2020-10-28 10:29:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:29:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:29:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:29:42,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:29:42,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:29:42,696 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:29:42,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:29:42,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:29:47,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:29:47,171 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:29:47,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:29:47 BoogieIcfgContainer [2020-10-28 10:29:47,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:29:47,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:29:47,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:29:47,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:29:47,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:29:39" (1/3) ... [2020-10-28 10:29:47,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e13a88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:29:47, skipping insertion in model container [2020-10-28 10:29:47,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:29:42" (2/3) ... [2020-10-28 10:29:47,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e13a88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:29:47, skipping insertion in model container [2020-10-28 10:29:47,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:29:47" (3/3) ... [2020-10-28 10:29:47,183 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label27.c [2020-10-28 10:29:47,195 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:29:47,200 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:29:47,211 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:29:47,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:29:47,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:29:47,249 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:29:47,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:29:47,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:29:47,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:29:47,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:29:47,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:29:47,284 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:29:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-28 10:29:47,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:29:47,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:29:47,340 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:29:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:29:47,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1679613488, now seen corresponding path program 1 times [2020-10-28 10:29:47,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:29:47,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440352849] [2020-10-28 10:29:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:29:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:52,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:53,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 809 [2020-10-28 10:29:53,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:29:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-28 10:29:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:53,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:29:53,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:29:53,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 800 [2020-10-28 10:29:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 10:29:54,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:54,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:54,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:54,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:54,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 10:29:54,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:54,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:54,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:54,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:29:54,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:55,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:29:55,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440352849] [2020-10-28 10:29:55,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:29:55,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:29:55,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462010779] [2020-10-28 10:29:55,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:29:55,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:55,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:29:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:29:55,479 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:30:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:05,290 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-28 10:30:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:30:05,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 793 [2020-10-28 10:30:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:05,332 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:30:05,332 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:30:05,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:30:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:30:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-28 10:30:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-28 10:30:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-28 10:30:05,523 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 793 [2020-10-28 10:30:05,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:05,526 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-28 10:30:05,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:30:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-28 10:30:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-28 10:30:05,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:05,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:30:05,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:30:05,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:05,568 INFO L82 PathProgramCache]: Analyzing trace with hash -2064407410, now seen corresponding path program 1 times [2020-10-28 10:30:05,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:05,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39104980] [2020-10-28 10:30:05,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:05,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:10,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:10,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 819 [2020-10-28 10:30:10,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:30:10,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 10:30:10,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:10,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:30:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:30:10,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:30:10,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:30:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:11,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:11,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:11,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:30:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:11,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:30:11,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:30:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:11,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:11,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:30:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:30:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:30:11,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39104980] [2020-10-28 10:30:11,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:30:11,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:30:11,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139996291] [2020-10-28 10:30:11,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:30:11,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:30:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:30:11,709 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 7 states. [2020-10-28 10:30:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:23,267 INFO L93 Difference]: Finished difference Result 4323 states and 7644 transitions. [2020-10-28 10:30:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:30:23,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 801 [2020-10-28 10:30:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:23,287 INFO L225 Difference]: With dead ends: 4323 [2020-10-28 10:30:23,288 INFO L226 Difference]: Without dead ends: 2639 [2020-10-28 10:30:23,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:30:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-28 10:30:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2579. [2020-10-28 10:30:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2579 states. [2020-10-28 10:30:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4145 transitions. [2020-10-28 10:30:23,391 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4145 transitions. Word has length 801 [2020-10-28 10:30:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:23,392 INFO L481 AbstractCegarLoop]: Abstraction has 2579 states and 4145 transitions. [2020-10-28 10:30:23,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:30:23,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4145 transitions. [2020-10-28 10:30:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2020-10-28 10:30:23,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:23,405 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:30:23,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:30:23,406 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1516739890, now seen corresponding path program 1 times [2020-10-28 10:30:23,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:23,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97669625] [2020-10-28 10:30:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:24,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:27,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 821 [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:30:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:30:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:30:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:28,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:28,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:28,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:30:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:28,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:30:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:30:28,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:28,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:30:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:29,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:30:29,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97669625] [2020-10-28 10:30:29,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:30:29,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:30:29,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843782500] [2020-10-28 10:30:29,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:30:29,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:29,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:30:29,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:30:29,373 INFO L87 Difference]: Start difference. First operand 2579 states and 4145 transitions. Second operand 8 states. [2020-10-28 10:30:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:40,803 INFO L93 Difference]: Finished difference Result 7914 states and 12962 transitions. [2020-10-28 10:30:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:30:40,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 803 [2020-10-28 10:30:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:40,856 INFO L225 Difference]: With dead ends: 7914 [2020-10-28 10:30:40,856 INFO L226 Difference]: Without dead ends: 5341 [2020-10-28 10:30:40,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:30:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2020-10-28 10:30:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5255. [2020-10-28 10:30:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-28 10:30:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 8170 transitions. [2020-10-28 10:30:41,062 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 8170 transitions. Word has length 803 [2020-10-28 10:30:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:30:41,062 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 8170 transitions. [2020-10-28 10:30:41,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:30:41,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 8170 transitions. [2020-10-28 10:30:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-28 10:30:41,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:30:41,092 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:30:41,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:30:41,093 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:30:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:30:41,094 INFO L82 PathProgramCache]: Analyzing trace with hash -425066253, now seen corresponding path program 1 times [2020-10-28 10:30:41,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:30:41,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687488061] [2020-10-28 10:30:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:30:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:46,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 824 [2020-10-28 10:30:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 10:30:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:46,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:30:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:46,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:46,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:30:46,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:30:46,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:30:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:30:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:30:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:30:46,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:30:46,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 10:30:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:30:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:30:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:30:46,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:30:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:30:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:30:46,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:30:46,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:30:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:30:47,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687488061] [2020-10-28 10:30:47,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:30:47,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:30:47,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155206912] [2020-10-28 10:30:47,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:30:47,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:30:47,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:30:47,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:30:47,052 INFO L87 Difference]: Start difference. First operand 5255 states and 8170 transitions. Second operand 7 states. [2020-10-28 10:30:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:30:59,734 INFO L93 Difference]: Finished difference Result 15985 states and 25752 transitions. [2020-10-28 10:30:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:30:59,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 806 [2020-10-28 10:30:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:30:59,796 INFO L225 Difference]: With dead ends: 15985 [2020-10-28 10:30:59,796 INFO L226 Difference]: Without dead ends: 10736 [2020-10-28 10:30:59,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:30:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2020-10-28 10:31:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 10617. [2020-10-28 10:31:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10617 states. [2020-10-28 10:31:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10617 states to 10617 states and 15298 transitions. [2020-10-28 10:31:00,108 INFO L78 Accepts]: Start accepts. Automaton has 10617 states and 15298 transitions. Word has length 806 [2020-10-28 10:31:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:00,109 INFO L481 AbstractCegarLoop]: Abstraction has 10617 states and 15298 transitions. [2020-10-28 10:31:00,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:31:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10617 states and 15298 transitions. [2020-10-28 10:31:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2020-10-28 10:31:00,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:00,147 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:31:00,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:31:00,147 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:00,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:00,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1816570092, now seen corresponding path program 1 times [2020-10-28 10:31:00,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:00,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810294244] [2020-10-28 10:31:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:00,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:05,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:05,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:05,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 845 [2020-10-28 10:31:05,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:31:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-28 10:31:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:05,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:31:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:31:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:31:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:05,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:31:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:05,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:05,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:31:05,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:05,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:31:05,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 10:31:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:05,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:05,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:31:05,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:05,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:31:05,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:05,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 10:31:05,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:05,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:31:06,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810294244] [2020-10-28 10:31:06,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:06,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:31:06,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786333044] [2020-10-28 10:31:06,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:31:06,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:06,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:31:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:31:06,197 INFO L87 Difference]: Start difference. First operand 10617 states and 15298 transitions. Second operand 7 states. [2020-10-28 10:31:06,347 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:31:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:19,211 INFO L93 Difference]: Finished difference Result 30882 states and 46464 transitions. [2020-10-28 10:31:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:31:19,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 825 [2020-10-28 10:31:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:19,292 INFO L225 Difference]: With dead ends: 30882 [2020-10-28 10:31:19,292 INFO L226 Difference]: Without dead ends: 20271 [2020-10-28 10:31:19,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:31:19,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20271 states. [2020-10-28 10:31:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20271 to 20189. [2020-10-28 10:31:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20189 states. [2020-10-28 10:31:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20189 states to 20189 states and 28600 transitions. [2020-10-28 10:31:19,820 INFO L78 Accepts]: Start accepts. Automaton has 20189 states and 28600 transitions. Word has length 825 [2020-10-28 10:31:19,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:19,820 INFO L481 AbstractCegarLoop]: Abstraction has 20189 states and 28600 transitions. [2020-10-28 10:31:19,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:31:19,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20189 states and 28600 transitions. [2020-10-28 10:31:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2020-10-28 10:31:19,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:19,891 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:31:19,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:31:19,891 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1408239035, now seen corresponding path program 1 times [2020-10-28 10:31:19,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:19,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782440880] [2020-10-28 10:31:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:19,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:25,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 884 [2020-10-28 10:31:25,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:31:25,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-28 10:31:25,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:25,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:31:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:31:25,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:31:25,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:25,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:25,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:31:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:25,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:31:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:25,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:31:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:31:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:25,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 10:31:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:25,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:31:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:31:25,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 10:31:26,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782440880] [2020-10-28 10:31:26,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:26,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:31:26,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521536195] [2020-10-28 10:31:26,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:31:26,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:31:26,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:31:26,144 INFO L87 Difference]: Start difference. First operand 20189 states and 28600 transitions. Second operand 8 states. [2020-10-28 10:31:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:38,669 INFO L93 Difference]: Finished difference Result 57412 states and 84717 transitions. [2020-10-28 10:31:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:31:38,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 862 [2020-10-28 10:31:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:38,822 INFO L225 Difference]: With dead ends: 57412 [2020-10-28 10:31:38,822 INFO L226 Difference]: Without dead ends: 37229 [2020-10-28 10:31:38,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:31:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37229 states. [2020-10-28 10:31:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37229 to 31263. [2020-10-28 10:31:39,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31263 states. [2020-10-28 10:31:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31263 states to 31263 states and 43013 transitions. [2020-10-28 10:31:39,980 INFO L78 Accepts]: Start accepts. Automaton has 31263 states and 43013 transitions. Word has length 862 [2020-10-28 10:31:39,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:39,981 INFO L481 AbstractCegarLoop]: Abstraction has 31263 states and 43013 transitions. [2020-10-28 10:31:39,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:31:39,981 INFO L276 IsEmpty]: Start isEmpty. Operand 31263 states and 43013 transitions. [2020-10-28 10:31:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-28 10:31:40,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:40,070 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:31:40,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:31:40,070 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:40,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:40,071 INFO L82 PathProgramCache]: Analyzing trace with hash 837031698, now seen corresponding path program 1 times [2020-10-28 10:31:40,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:40,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955688015] [2020-10-28 10:31:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:43,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:45,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:45,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-28 10:31:45,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 10:31:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:45,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:45,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:45,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:45,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:45,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:45,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:31:45,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:31:45,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:45,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:31:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:31:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:45,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:31:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:45,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:45,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:31:45,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:45,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 10:31:45,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:45,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 10:31:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:31:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:31:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 10:31:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 10:31:46,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955688015] [2020-10-28 10:31:46,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:46,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:31:46,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137168528] [2020-10-28 10:31:46,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:31:46,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:46,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:31:46,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:31:46,201 INFO L87 Difference]: Start difference. First operand 31263 states and 43013 transitions. Second operand 7 states. [2020-10-28 10:31:58,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:58,453 INFO L93 Difference]: Finished difference Result 76395 states and 108355 transitions. [2020-10-28 10:31:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:31:58,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-28 10:31:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:58,620 INFO L225 Difference]: With dead ends: 76395 [2020-10-28 10:31:58,620 INFO L226 Difference]: Without dead ends: 45138 [2020-10-28 10:31:58,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:31:58,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45138 states. [2020-10-28 10:31:59,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45138 to 45055. [2020-10-28 10:31:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45055 states. [2020-10-28 10:32:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45055 states to 45055 states and 59932 transitions. [2020-10-28 10:32:00,016 INFO L78 Accepts]: Start accepts. Automaton has 45055 states and 59932 transitions. Word has length 949 [2020-10-28 10:32:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:00,016 INFO L481 AbstractCegarLoop]: Abstraction has 45055 states and 59932 transitions. [2020-10-28 10:32:00,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 45055 states and 59932 transitions. [2020-10-28 10:32:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-28 10:32:00,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:00,100 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:00,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:32:00,101 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1162543484, now seen corresponding path program 1 times [2020-10-28 10:32:00,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:00,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670219302] [2020-10-28 10:32:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:03,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1091 [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:05,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:32:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-28 10:32:05,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:05,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:05,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:05,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:05,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:05,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:32:05,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:32:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:32:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 10:32:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 10:32:05,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 10:32:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:05,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 351 proven. 65 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-28 10:32:06,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670219302] [2020-10-28 10:32:06,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:06,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:32:06,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041416865] [2020-10-28 10:32:06,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:32:06,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:32:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:32:06,535 INFO L87 Difference]: Start difference. First operand 45055 states and 59932 transitions. Second operand 8 states. [2020-10-28 10:32:15,740 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:32:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:19,599 INFO L93 Difference]: Finished difference Result 104629 states and 142158 transitions. [2020-10-28 10:32:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:32:19,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1067 [2020-10-28 10:32:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:19,822 INFO L225 Difference]: With dead ends: 104629 [2020-10-28 10:32:19,822 INFO L226 Difference]: Without dead ends: 59580 [2020-10-28 10:32:19,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:32:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59580 states. [2020-10-28 10:32:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59580 to 57749. [2020-10-28 10:32:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57749 states. [2020-10-28 10:32:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57749 states to 57749 states and 72634 transitions. [2020-10-28 10:32:21,280 INFO L78 Accepts]: Start accepts. Automaton has 57749 states and 72634 transitions. Word has length 1067 [2020-10-28 10:32:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:21,281 INFO L481 AbstractCegarLoop]: Abstraction has 57749 states and 72634 transitions. [2020-10-28 10:32:21,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:32:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 57749 states and 72634 transitions. [2020-10-28 10:32:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2020-10-28 10:32:21,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:21,369 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:21,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:32:21,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:21,370 INFO L82 PathProgramCache]: Analyzing trace with hash -529003634, now seen corresponding path program 1 times [2020-10-28 10:32:21,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:21,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103945050] [2020-10-28 10:32:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:21,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:25,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1267 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:32:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 10:32:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:26,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:26,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:26,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:26,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:26,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:32:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:32:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:26,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:32:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:26,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 10:32:26,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 10:32:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 10:32:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:27,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 10:32:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:27,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 10:32:27,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:27,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-28 10:32:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:27,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:27,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:27,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 10:32:27,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:32:27,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:27,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 10:32:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:27,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 481 proven. 324 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2020-10-28 10:32:28,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103945050] [2020-10-28 10:32:28,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:28,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:28,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165350717] [2020-10-28 10:32:28,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:28,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:28,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:28,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:28,348 INFO L87 Difference]: Start difference. First operand 57749 states and 72634 transitions. Second operand 7 states. [2020-10-28 10:32:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:45,863 INFO L93 Difference]: Finished difference Result 131883 states and 166370 transitions. [2020-10-28 10:32:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:32:45,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1241 [2020-10-28 10:32:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:46,096 INFO L225 Difference]: With dead ends: 131883 [2020-10-28 10:32:46,097 INFO L226 Difference]: Without dead ends: 74140 [2020-10-28 10:32:46,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:32:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74140 states. [2020-10-28 10:32:48,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74140 to 73154. [2020-10-28 10:32:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73154 states. [2020-10-28 10:32:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73154 states to 73154 states and 89962 transitions. [2020-10-28 10:32:48,416 INFO L78 Accepts]: Start accepts. Automaton has 73154 states and 89962 transitions. Word has length 1241 [2020-10-28 10:32:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:48,417 INFO L481 AbstractCegarLoop]: Abstraction has 73154 states and 89962 transitions. [2020-10-28 10:32:48,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 73154 states and 89962 transitions. [2020-10-28 10:32:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1284 [2020-10-28 10:32:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:48,548 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:48,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:32:48,548 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash -296959922, now seen corresponding path program 1 times [2020-10-28 10:32:48,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:48,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547907371] [2020-10-28 10:32:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:49,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:50,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:53,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1309 [2020-10-28 10:32:53,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:32:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-28 10:32:53,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:53,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:32:53,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-28 10:32:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:54,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:54,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:54,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:54,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:54,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:54,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:54,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 10:32:54,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:32:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:54,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 337 [2020-10-28 10:32:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:32:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:54,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 10:32:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:55,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2020-10-28 10:32:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:55,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-28 10:32:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:55,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-10-28 10:32:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 10:32:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 506 proven. 126 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-10-28 10:32:56,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547907371] [2020-10-28 10:32:56,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:56,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 10:32:56,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432209341] [2020-10-28 10:32:56,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 10:32:56,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:56,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 10:32:56,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:32:56,695 INFO L87 Difference]: Start difference. First operand 73154 states and 89962 transitions. Second operand 9 states. [2020-10-28 10:33:03,569 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:33:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:11,064 INFO L93 Difference]: Finished difference Result 146924 states and 184758 transitions. [2020-10-28 10:33:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 10:33:11,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1283 [2020-10-28 10:33:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:11,287 INFO L225 Difference]: With dead ends: 146924 [2020-10-28 10:33:11,288 INFO L226 Difference]: Without dead ends: 75448 [2020-10-28 10:33:11,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-28 10:33:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75448 states.