/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:15:11,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:15:11,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:15:11,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:15:11,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:15:11,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:15:11,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:15:11,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:15:11,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:15:11,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:15:11,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:15:11,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:15:11,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:15:11,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:15:11,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:15:11,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:15:11,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:15:11,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:15:11,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:15:11,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:15:11,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:15:11,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:15:11,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:15:11,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:15:11,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:15:11,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:15:11,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:15:11,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:15:11,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:15:11,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:15:11,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:15:11,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:15:11,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:15:11,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:15:11,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:15:11,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:15:11,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:15:11,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:15:12,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:15:12,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:15:12,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:15:12,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 05:15:12,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:15:12,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:15:12,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:15:12,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:15:12,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:15:12,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:15:12,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:15:12,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:15:12,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:15:12,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:15:12,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:15:12,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:15:12,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:15:12,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:15:12,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:15:12,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:15:12,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:15:12,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:15:12,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:15:12,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:15:12,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:15:12,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:15:12,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:15:12,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:15:12,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:15:12,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:15:12,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:15:12,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:15:12,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:15:12,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:15:12,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:15:12,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:15:12,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:15:12,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:15:12,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:15:12,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label49.c [2020-10-29 05:15:12,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d385d25/0d36629afcb24565a7707dd346004bfb/FLAG2e4fdddf3 [2020-10-29 05:15:13,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:15:13,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label49.c [2020-10-29 05:15:13,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d385d25/0d36629afcb24565a7707dd346004bfb/FLAG2e4fdddf3 [2020-10-29 05:15:14,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72d385d25/0d36629afcb24565a7707dd346004bfb [2020-10-29 05:15:14,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:15:14,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:15:14,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:15:14,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:15:14,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:15:14,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:15:14" (1/1) ... [2020-10-29 05:15:14,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f76bfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:14, skipping insertion in model container [2020-10-29 05:15:14,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:15:14" (1/1) ... [2020-10-29 05:15:14,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:15:14,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:15:15,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:15:15,782 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:15:16,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:15:16,467 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:15:16,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16 WrapperNode [2020-10-29 05:15:16,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:15:16,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:15:16,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:15:16,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:15:16,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... [2020-10-29 05:15:16,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:15:16,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:15:16,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:15:16,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:15:16,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:15:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:15:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:15:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:15:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:15:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:15:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:15:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:15:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:15:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:15:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:15:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:15:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:15:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:15:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:15:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:15:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:15:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:15:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:15:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:15:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:15:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:15:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:15:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:15:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:15:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:15:22,671 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:15:22,671 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:15:22,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:15:22 BoogieIcfgContainer [2020-10-29 05:15:22,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:15:22,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:15:22,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:15:22,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:15:22,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:15:14" (1/3) ... [2020-10-29 05:15:22,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f46fd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:15:22, skipping insertion in model container [2020-10-29 05:15:22,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:15:16" (2/3) ... [2020-10-29 05:15:22,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f46fd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:15:22, skipping insertion in model container [2020-10-29 05:15:22,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:15:22" (3/3) ... [2020-10-29 05:15:22,690 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label49.c [2020-10-29 05:15:22,703 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:15:22,713 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:15:22,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:15:22,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:15:22,781 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:15:22,781 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:15:22,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:15:22,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:15:22,782 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:15:22,782 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:15:22,782 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:15:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:15:22,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-29 05:15:22,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:22,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:22,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1013806564, now seen corresponding path program 1 times [2020-10-29 05:15:22,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:22,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438039799] [2020-10-29 05:15:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:28,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:28,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-29 05:15:28,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:28,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5176 [2020-10-29 05:15:28,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:28,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:28,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:15:28,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:15:28,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-29 05:15:28,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 05:15:29,795 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:15:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:29,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:29,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:29,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:29,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 05:15:29,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:29,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:29,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:15:29,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:15:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:15:30,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438039799] [2020-10-29 05:15:30,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:15:30,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:15:30,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773588805] [2020-10-29 05:15:30,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:15:30,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:30,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:15:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:15:30,905 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:15:31,130 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:15:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:42,216 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-29 05:15:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:15:42,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 804 [2020-10-29 05:15:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:42,272 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:15:42,272 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:15:42,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:15:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:15:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-29 05:15:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-29 05:15:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3016 transitions. [2020-10-29 05:15:42,474 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3016 transitions. Word has length 804 [2020-10-29 05:15:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:42,477 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 3016 transitions. [2020-10-29 05:15:42,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:15:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3016 transitions. [2020-10-29 05:15:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-29 05:15:42,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:42,513 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:42,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:15:42,513 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 781630997, now seen corresponding path program 1 times [2020-10-29 05:15:42,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:42,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472109484] [2020-10-29 05:15:42,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:42,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:43,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:47,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-29 05:15:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:15:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-29 05:15:47,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:47,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:15:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:15:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 808 [2020-10-29 05:15:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:15:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:15:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:48,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:48,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:48,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:15:48,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:15:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:48,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:15:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:48,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:15:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:15:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:15:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:48,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:15:48,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:15:48,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:15:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 05:15:48,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:15:48,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:15:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:15:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:15:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:15:48,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:15:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:15:49,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472109484] [2020-10-29 05:15:49,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:15:49,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:15:49,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673648303] [2020-10-29 05:15:49,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:15:49,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:15:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:15:49,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:15:49,356 INFO L87 Difference]: Start difference. First operand 1688 states and 3016 transitions. Second operand 5 states. [2020-10-29 05:15:49,479 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-29 05:15:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:15:59,631 INFO L93 Difference]: Finished difference Result 5075 states and 9125 transitions. [2020-10-29 05:15:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:15:59,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 823 [2020-10-29 05:15:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:15:59,659 INFO L225 Difference]: With dead ends: 5075 [2020-10-29 05:15:59,659 INFO L226 Difference]: Without dead ends: 3393 [2020-10-29 05:15:59,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:15:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-29 05:15:59,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3389. [2020-10-29 05:15:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2020-10-29 05:15:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5274 transitions. [2020-10-29 05:15:59,769 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5274 transitions. Word has length 823 [2020-10-29 05:15:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:15:59,771 INFO L481 AbstractCegarLoop]: Abstraction has 3389 states and 5274 transitions. [2020-10-29 05:15:59,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:15:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5274 transitions. [2020-10-29 05:15:59,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-29 05:15:59,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:15:59,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:15:59,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:15:59,806 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:15:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:15:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1711528442, now seen corresponding path program 1 times [2020-10-29 05:15:59,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:15:59,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985794357] [2020-10-29 05:15:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:15:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:15:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:15:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:04,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:04,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 888 [2020-10-29 05:16:04,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:16:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:16:04,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:04,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:16:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:16:04,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 05:16:04,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:05,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:05,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:05,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:05,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:16:05,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:05,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:05,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:16:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:05,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:16:05,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:16:05,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 05:16:05,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:05,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:05,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:16:05,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:16:05,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:16:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:05,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:05,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:16:05,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:16:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 05:16:05,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:05,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:16:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:16:05,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:16:05,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:16:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 05:16:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:05,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:05,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:16:05,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:05,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 05:16:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:05,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:16:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:16:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 05:16:05,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:16:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 75 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 05:16:06,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985794357] [2020-10-29 05:16:06,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:06,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 05:16:06,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523079869] [2020-10-29 05:16:06,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:16:06,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:06,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:16:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:16:06,041 INFO L87 Difference]: Start difference. First operand 3389 states and 5274 transitions. Second operand 8 states. [2020-10-29 05:16:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:18,020 INFO L93 Difference]: Finished difference Result 10237 states and 16119 transitions. [2020-10-29 05:16:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 05:16:18,021 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 866 [2020-10-29 05:16:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:18,065 INFO L225 Difference]: With dead ends: 10237 [2020-10-29 05:16:18,066 INFO L226 Difference]: Without dead ends: 6854 [2020-10-29 05:16:18,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:16:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2020-10-29 05:16:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6850. [2020-10-29 05:16:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6850 states. [2020-10-29 05:16:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 9636 transitions. [2020-10-29 05:16:18,315 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 9636 transitions. Word has length 866 [2020-10-29 05:16:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:18,316 INFO L481 AbstractCegarLoop]: Abstraction has 6850 states and 9636 transitions. [2020-10-29 05:16:18,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:16:18,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 9636 transitions. [2020-10-29 05:16:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2020-10-29 05:16:18,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:18,344 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:18,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:16:18,344 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1892502509, now seen corresponding path program 1 times [2020-10-29 05:16:18,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:18,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015578255] [2020-10-29 05:16:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 917 [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:16:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 05:16:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 593 [2020-10-29 05:16:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:25,713 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-29 05:16:25,855 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-29 05:16:26,005 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-29 05:16:26,197 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 45 [2020-10-29 05:16:26,392 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2020-10-29 05:16:26,586 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2020-10-29 05:16:26,780 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-10-29 05:16:27,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:16:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:27,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:27,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:16:27,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:27,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:27,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:16:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:27,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:27,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:16:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:16:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:27,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 05:16:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:27,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:16:27,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 05:16:27,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:16:27,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 05:16:27,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:16:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 05:16:32,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015578255] [2020-10-29 05:16:32,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:16:32,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:16:32,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728806271] [2020-10-29 05:16:32,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:16:32,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:16:32,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:16:32,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:16:32,747 INFO L87 Difference]: Start difference. First operand 6850 states and 9636 transitions. Second operand 17 states. [2020-10-29 05:16:34,033 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:16:34,264 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-29 05:16:34,844 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 130 [2020-10-29 05:16:35,548 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2020-10-29 05:16:36,955 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 128 [2020-10-29 05:16:38,970 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 127 [2020-10-29 05:16:39,858 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 126 [2020-10-29 05:16:42,256 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:16:42,464 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:16:48,649 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:16:48,843 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:16:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:16:55,344 INFO L93 Difference]: Finished difference Result 14284 states and 20123 transitions. [2020-10-29 05:16:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:16:55,345 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 897 [2020-10-29 05:16:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:16:55,384 INFO L225 Difference]: With dead ends: 14284 [2020-10-29 05:16:55,384 INFO L226 Difference]: Without dead ends: 7440 [2020-10-29 05:16:55,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:16:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2020-10-29 05:16:55,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7436. [2020-10-29 05:16:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7436 states. [2020-10-29 05:16:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 10234 transitions. [2020-10-29 05:16:55,608 INFO L78 Accepts]: Start accepts. Automaton has 7436 states and 10234 transitions. Word has length 897 [2020-10-29 05:16:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:16:55,610 INFO L481 AbstractCegarLoop]: Abstraction has 7436 states and 10234 transitions. [2020-10-29 05:16:55,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:16:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7436 states and 10234 transitions. [2020-10-29 05:16:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2020-10-29 05:16:55,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:16:55,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:16:55,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:16:55,636 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:16:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:16:55,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1766950370, now seen corresponding path program 1 times [2020-10-29 05:16:55,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:16:55,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653916695] [2020-10-29 05:16:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:16:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:16:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:55,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:16:56,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 966 [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 05:17:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 05:17:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:01,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:01,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:01,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:01,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:17:01,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:01,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:01,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:01,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:01,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:17:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:17:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:01,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 05:17:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:17:01,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 05:17:01,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 05:17:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-29 05:17:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:01,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:01,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 05:17:01,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:01,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 05:17:01,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:01,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 05:17:01,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 182 proven. 27 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 05:17:01,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653916695] [2020-10-29 05:17:01,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:01,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:17:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392731321] [2020-10-29 05:17:01,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:17:01,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:01,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:17:01,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:17:01,857 INFO L87 Difference]: Start difference. First operand 7436 states and 10234 transitions. Second operand 7 states. [2020-10-29 05:17:14,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:14,377 INFO L93 Difference]: Finished difference Result 21971 states and 31367 transitions. [2020-10-29 05:17:14,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:17:14,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 944 [2020-10-29 05:17:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:14,452 INFO L225 Difference]: With dead ends: 21971 [2020-10-29 05:17:14,452 INFO L226 Difference]: Without dead ends: 14541 [2020-10-29 05:17:14,471 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 [2020-10-29 05:17:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14541 states. [2020-10-29 05:17:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14541 to 14478. [2020-10-29 05:17:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14478 states. [2020-10-29 05:17:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14478 states to 14478 states and 19934 transitions. [2020-10-29 05:17:14,887 INFO L78 Accepts]: Start accepts. Automaton has 14478 states and 19934 transitions. Word has length 944 [2020-10-29 05:17:14,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:14,888 INFO L481 AbstractCegarLoop]: Abstraction has 14478 states and 19934 transitions. [2020-10-29 05:17:14,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:17:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 14478 states and 19934 transitions. [2020-10-29 05:17:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2020-10-29 05:17:14,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:14,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:17:14,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:17:14,939 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:14,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:14,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1723212140, now seen corresponding path program 1 times [2020-10-29 05:17:14,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:14,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856177757] [2020-10-29 05:17:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1014 [2020-10-29 05:17:20,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 05:17:20,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 950 [2020-10-29 05:17:20,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:20,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:20,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:20,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:17:20,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:17:20,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:20,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 05:17:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:20,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:20,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 05:17:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 92 proven. 137 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:17:21,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856177757] [2020-10-29 05:17:21,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:21,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 05:17:21,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098534289] [2020-10-29 05:17:21,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 05:17:21,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 05:17:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:17:21,697 INFO L87 Difference]: Start difference. First operand 14478 states and 19934 transitions. Second operand 6 states. [2020-10-29 05:17:32,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:32,217 INFO L93 Difference]: Finished difference Result 29028 states and 40152 transitions. [2020-10-29 05:17:32,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 05:17:32,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 994 [2020-10-29 05:17:32,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:32,289 INFO L225 Difference]: With dead ends: 29028 [2020-10-29 05:17:32,289 INFO L226 Difference]: Without dead ends: 14556 [2020-10-29 05:17:32,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:17:32,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14556 states. [2020-10-29 05:17:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14556 to 14510. [2020-10-29 05:17:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14510 states. [2020-10-29 05:17:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14510 states to 14510 states and 18435 transitions. [2020-10-29 05:17:32,938 INFO L78 Accepts]: Start accepts. Automaton has 14510 states and 18435 transitions. Word has length 994 [2020-10-29 05:17:32,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:32,940 INFO L481 AbstractCegarLoop]: Abstraction has 14510 states and 18435 transitions. [2020-10-29 05:17:32,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 05:17:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14510 states and 18435 transitions. [2020-10-29 05:17:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1039 [2020-10-29 05:17:33,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:33,001 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:17:33,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:17:33,002 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:33,003 INFO L82 PathProgramCache]: Analyzing trace with hash 305812176, now seen corresponding path program 1 times [2020-10-29 05:17:33,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:33,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815882791] [2020-10-29 05:17:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:33,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1062 [2020-10-29 05:17:38,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 05:17:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 05:17:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:17:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:17:38,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:17:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 05:17:38,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 05:17:38,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:17:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:17:38,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 05:17:38,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 05:17:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 05:17:38,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 05:17:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-29 05:17:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:17:38,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 05:17:38,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:38,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:17:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 05:17:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:38,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:17:38,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 05:17:38,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:17:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 05:17:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:17:38,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:17:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:17:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-29 05:17:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:17:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:17:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 277 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 05:17:39,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815882791] [2020-10-29 05:17:39,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:17:39,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:17:39,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176924538] [2020-10-29 05:17:39,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:17:39,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:17:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:17:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:17:39,860 INFO L87 Difference]: Start difference. First operand 14510 states and 18435 transitions. Second operand 7 states. [2020-10-29 05:17:54,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:17:54,085 INFO L93 Difference]: Finished difference Result 43033 states and 57201 transitions. [2020-10-29 05:17:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:17:54,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1038 [2020-10-29 05:17:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:17:54,194 INFO L225 Difference]: With dead ends: 43033 [2020-10-29 05:17:54,194 INFO L226 Difference]: Without dead ends: 28529 [2020-10-29 05:17:54,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:17:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28529 states. [2020-10-29 05:17:55,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28529 to 24844. [2020-10-29 05:17:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24844 states. [2020-10-29 05:17:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 30151 transitions. [2020-10-29 05:17:55,167 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 30151 transitions. Word has length 1038 [2020-10-29 05:17:55,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:17:55,168 INFO L481 AbstractCegarLoop]: Abstraction has 24844 states and 30151 transitions. [2020-10-29 05:17:55,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:17:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 30151 transitions. [2020-10-29 05:17:55,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1061 [2020-10-29 05:17:55,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:17:55,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 05:17:55,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:17:55,235 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:17:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:17:55,236 INFO L82 PathProgramCache]: Analyzing trace with hash -79135828, now seen corresponding path program 1 times [2020-10-29 05:17:55,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:17:55,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929261961] [2020-10-29 05:17:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:17:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:17:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:17:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:00,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:00,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1080 [2020-10-29 05:18:00,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:18:00,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-29 05:18:00,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:00,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:18:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 265 [2020-10-29 05:18:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 679 [2020-10-29 05:18:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:02,822 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:18:02,943 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 05:18:03,069 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-29 05:18:03,192 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-29 05:18:03,328 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2020-10-29 05:18:03,480 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-29 05:18:03,655 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2020-10-29 05:18:03,891 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 46 [2020-10-29 05:18:04,147 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 45 [2020-10-29 05:18:04,384 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 42 [2020-10-29 05:18:04,616 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2020-10-29 05:18:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:18:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:04,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:04,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:18:04,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:18:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:04,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:18:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:18:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:18:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 05:18:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 05:18:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 05:18:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:18:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:18:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:18:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:18:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:18:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 05:18:05,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:18:05,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:18:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:18:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:18:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:18:12,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929261961] [2020-10-29 05:18:12,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:18:12,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:18:12,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251816715] [2020-10-29 05:18:12,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:18:12,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:18:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:18:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:18:12,749 INFO L87 Difference]: Start difference. First operand 24844 states and 30151 transitions. Second operand 17 states. [2020-10-29 05:18:17,893 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:18:18,134 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:18:21,505 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:18:27,573 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:18:27,831 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:18:30,361 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:18:37,882 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:18:38,368 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 142 [2020-10-29 05:18:39,010 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 137 [2020-10-29 05:18:41,633 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 134