/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:34:55,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:34:55,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:34:55,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:34:55,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:34:55,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:34:55,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:34:55,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:34:55,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:34:55,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:34:55,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:34:55,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:34:55,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:34:55,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:34:55,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:34:55,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:34:55,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:34:55,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:34:55,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:34:55,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:34:55,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:34:55,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:34:55,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:34:55,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:34:55,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:34:55,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:34:55,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:34:55,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:34:55,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:34:55,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:34:55,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:34:55,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:34:55,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:34:55,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:34:55,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:34:55,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:34:55,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:34:55,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:34:55,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:34:55,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:34:55,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:34:56,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:34:56,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:34:56,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:34:56,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:34:56,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:34:56,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:34:56,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:34:56,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:34:56,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:34:56,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:34:56,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:34:56,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:34:56,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:34:56,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:34:56,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:34:56,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:34:56,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:34:56,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:34:56,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:34:56,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:34:56,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:34:56,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:34:56,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:34:56,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:34:56,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:34:56,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:34:56,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:34:56,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:34:56,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:34:56,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:34:56,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:34:56,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:34:56,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:34:56,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:34:56,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:34:56,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:34:56,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-28 13:34:56,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f3dd912/89c88a2aab684de2a560364464c876fa/FLAGff9751c45 [2020-10-28 13:34:57,644 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:34:57,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label20.c [2020-10-28 13:34:57,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f3dd912/89c88a2aab684de2a560364464c876fa/FLAGff9751c45 [2020-10-28 13:34:57,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01f3dd912/89c88a2aab684de2a560364464c876fa [2020-10-28 13:34:57,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:34:57,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:34:57,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:34:57,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:34:57,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:34:57,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:34:57" (1/1) ... [2020-10-28 13:34:57,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@879a816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:57, skipping insertion in model container [2020-10-28 13:34:57,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:34:57" (1/1) ... [2020-10-28 13:34:57,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:34:57,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:34:59,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:34:59,313 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:34:59,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:34:59,967 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:34:59,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59 WrapperNode [2020-10-28 13:34:59,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:34:59,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:34:59,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:34:59,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:34:59,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:34:59,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... [2020-10-28 13:35:00,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:35:00,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:35:00,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:35:00,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:35:00,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:35:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:35:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:35:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:35:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:35:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:35:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:35:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:35:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:35:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:35:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:35:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:35:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:35:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:35:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:35:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:35:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:35:09,934 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:35:09,934 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:35:09,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:35:09 BoogieIcfgContainer [2020-10-28 13:35:09,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:35:09,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:35:09,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:35:09,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:35:09,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:34:57" (1/3) ... [2020-10-28 13:35:09,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac1c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:35:09, skipping insertion in model container [2020-10-28 13:35:09,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:34:59" (2/3) ... [2020-10-28 13:35:09,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac1c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:35:09, skipping insertion in model container [2020-10-28 13:35:09,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:35:09" (3/3) ... [2020-10-28 13:35:09,950 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label20.c [2020-10-28 13:35:09,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:35:09,972 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:35:09,989 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:35:10,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:35:10,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:35:10,053 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:35:10,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:35:10,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:35:10,053 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:35:10,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:35:10,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:35:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:35:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 13:35:10,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:10,115 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] [2020-10-28 13:35:10,115 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:10,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1813324909, now seen corresponding path program 1 times [2020-10-28 13:35:10,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:10,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745169912] [2020-10-28 13:35:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:10,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:10,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 13:35:10,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-28 13:35:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:10,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:35:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 13:35:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:35:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:35:11,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:11,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:35:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:11,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745169912] [2020-10-28 13:35:11,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:35:11,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:35:11,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928081581] [2020-10-28 13:35:11,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:35:11,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:35:11,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:35:11,151 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:35:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:25,630 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-28 13:35:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:35:25,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-28 13:35:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:25,661 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:35:25,661 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:35:25,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:35:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:35:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-28 13:35:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-28 13:35:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-28 13:35:25,889 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 33 [2020-10-28 13:35:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:25,890 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-28 13:35:25,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:35:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-28 13:35:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-28 13:35:25,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:25,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:25,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:35:25,902 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:25,905 INFO L82 PathProgramCache]: Analyzing trace with hash -474724366, now seen corresponding path program 1 times [2020-10-28 13:35:25,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:25,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135856408] [2020-10-28 13:35:25,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:35:27,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:35:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1737 [2020-10-28 13:35:27,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:35:27,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:35:27,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:27,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:27,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:35:27,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:27,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:35:27,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:28,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:28,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:35:28,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:35:28,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:28,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:28,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:28,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:35:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:28,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135856408] [2020-10-28 13:35:28,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:35:28,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:35:28,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819859295] [2020-10-28 13:35:28,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:28,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:28,193 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-28 13:35:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:42,899 INFO L93 Difference]: Finished difference Result 2466 states and 3913 transitions. [2020-10-28 13:35:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:35:42,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-28 13:35:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:42,916 INFO L225 Difference]: With dead ends: 2466 [2020-10-28 13:35:42,917 INFO L226 Difference]: Without dead ends: 1480 [2020-10-28 13:35:42,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:35:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2020-10-28 13:35:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1442. [2020-10-28 13:35:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-28 13:35:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1871 transitions. [2020-10-28 13:35:43,000 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1871 transitions. Word has length 104 [2020-10-28 13:35:43,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:43,001 INFO L481 AbstractCegarLoop]: Abstraction has 1442 states and 1871 transitions. [2020-10-28 13:35:43,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1871 transitions. [2020-10-28 13:35:43,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 13:35:43,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:43,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:43,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:35:43,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1756440345, now seen corresponding path program 1 times [2020-10-28 13:35:43,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:43,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206146166] [2020-10-28 13:35:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:43,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:43,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:43,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:35:43,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 13:35:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:43,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:43,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:43,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:43,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:43,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:35:43,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:43,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:43,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:43,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:43,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:43,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:43,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:35:43,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:43,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:35:43,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:43,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:43,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:35:43,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:35:43,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206146166] [2020-10-28 13:35:43,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:43,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:35:43,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579176259] [2020-10-28 13:35:43,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:35:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:35:43,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:35:43,989 INFO L87 Difference]: Start difference. First operand 1442 states and 1871 transitions. Second operand 5 states. [2020-10-28 13:36:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:01,977 INFO L93 Difference]: Finished difference Result 3350 states and 4601 transitions. [2020-10-28 13:36:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:01,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-28 13:36:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:01,991 INFO L225 Difference]: With dead ends: 3350 [2020-10-28 13:36:01,991 INFO L226 Difference]: Without dead ends: 1901 [2020-10-28 13:36:01,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:01,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-10-28 13:36:02,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1886. [2020-10-28 13:36:02,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2020-10-28 13:36:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2310 transitions. [2020-10-28 13:36:02,048 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2310 transitions. Word has length 107 [2020-10-28 13:36:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:02,049 INFO L481 AbstractCegarLoop]: Abstraction has 1886 states and 2310 transitions. [2020-10-28 13:36:02,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:36:02,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2310 transitions. [2020-10-28 13:36:02,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-28 13:36:02,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:02,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:36:02,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:36:02,054 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:02,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:02,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1614334199, now seen corresponding path program 1 times [2020-10-28 13:36:02,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:02,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379562772] [2020-10-28 13:36:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:03,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:03,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 13:36:03,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:03,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-10-28 13:36:03,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:03,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:03,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:36:03,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:03,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:03,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:36:03,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:03,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:36:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:03,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:04,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:04,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:04,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:36:04,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:36:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:36:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:36:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:36:04,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379562772] [2020-10-28 13:36:04,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:04,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:36:04,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764602129] [2020-10-28 13:36:04,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:36:04,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:04,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:36:04,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:04,348 INFO L87 Difference]: Start difference. First operand 1886 states and 2310 transitions. Second operand 7 states. [2020-10-28 13:36:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:18,064 INFO L93 Difference]: Finished difference Result 4253 states and 5513 transitions. [2020-10-28 13:36:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:36:18,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-28 13:36:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:18,086 INFO L225 Difference]: With dead ends: 4253 [2020-10-28 13:36:18,086 INFO L226 Difference]: Without dead ends: 2806 [2020-10-28 13:36:18,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:36:18,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-10-28 13:36:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2795. [2020-10-28 13:36:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-28 13:36:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3417 transitions. [2020-10-28 13:36:18,185 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3417 transitions. Word has length 193 [2020-10-28 13:36:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:18,187 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3417 transitions. [2020-10-28 13:36:18,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:36:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3417 transitions. [2020-10-28 13:36:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 13:36:18,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:18,191 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:18,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:36:18,192 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:18,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1948233691, now seen corresponding path program 1 times [2020-10-28 13:36:18,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:18,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882693145] [2020-10-28 13:36:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:21,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 13:36:23,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:36:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4764 [2020-10-28 13:36:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:36:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:36:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 13:36:23,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:23,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:36:23,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:23,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:23,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:23,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:36:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:36:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:23,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:36:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:36:23,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882693145] [2020-10-28 13:36:23,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:23,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:36:23,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838808894] [2020-10-28 13:36:23,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:36:23,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:23,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:36:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:36:23,473 INFO L87 Difference]: Start difference. First operand 2795 states and 3417 transitions. Second operand 5 states. [2020-10-28 13:36:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:36,706 INFO L93 Difference]: Finished difference Result 7350 states and 9323 transitions. [2020-10-28 13:36:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:36,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-28 13:36:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:36,735 INFO L225 Difference]: With dead ends: 7350 [2020-10-28 13:36:36,736 INFO L226 Difference]: Without dead ends: 4993 [2020-10-28 13:36:36,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:36,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2020-10-28 13:36:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4557. [2020-10-28 13:36:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-28 13:36:36,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5464 transitions. [2020-10-28 13:36:36,961 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5464 transitions. Word has length 195 [2020-10-28 13:36:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:36,963 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 5464 transitions. [2020-10-28 13:36:36,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:36:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5464 transitions. [2020-10-28 13:36:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-28 13:36:36,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:36,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:36:36,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:36:36,968 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:36,969 INFO L82 PathProgramCache]: Analyzing trace with hash -2084300763, now seen corresponding path program 1 times [2020-10-28 13:36:36,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:36,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115569637] [2020-10-28 13:36:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:36:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:36:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 13:36:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:42,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:36:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:42,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:36:42,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:36:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:36:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:36:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:36:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:42,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:36:42,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:36:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:36:42,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:36:42,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:36:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 13:36:42,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115569637] [2020-10-28 13:36:42,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:36:42,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:36:42,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811884091] [2020-10-28 13:36:42,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:36:42,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:36:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:36:42,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:36:42,783 INFO L87 Difference]: Start difference. First operand 4557 states and 5464 transitions. Second operand 6 states. [2020-10-28 13:36:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:36:56,283 INFO L93 Difference]: Finished difference Result 9115 states and 10943 transitions. [2020-10-28 13:36:56,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:36:56,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-10-28 13:36:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:36:56,306 INFO L225 Difference]: With dead ends: 9115 [2020-10-28 13:36:56,307 INFO L226 Difference]: Without dead ends: 4564 [2020-10-28 13:36:56,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:36:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2020-10-28 13:36:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4557. [2020-10-28 13:36:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4557 states. [2020-10-28 13:36:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4557 states to 4557 states and 5451 transitions. [2020-10-28 13:36:56,444 INFO L78 Accepts]: Start accepts. Automaton has 4557 states and 5451 transitions. Word has length 206 [2020-10-28 13:36:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:36:56,445 INFO L481 AbstractCegarLoop]: Abstraction has 4557 states and 5451 transitions. [2020-10-28 13:36:56,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:36:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4557 states and 5451 transitions. [2020-10-28 13:36:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-28 13:36:56,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:36:56,451 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:36:56,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:36:56,452 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:36:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:36:56,452 INFO L82 PathProgramCache]: Analyzing trace with hash -347877644, now seen corresponding path program 1 times [2020-10-28 13:36:56,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:36:56,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213623154] [2020-10-28 13:36:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:36:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:36:56,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:36:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4869 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 13:37:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 13:37:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:37:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:01,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 13:37:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:37:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:37:02,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213623154] [2020-10-28 13:37:02,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:02,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:37:02,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668998609] [2020-10-28 13:37:02,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:02,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:02,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:02,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:02,028 INFO L87 Difference]: Start difference. First operand 4557 states and 5451 transitions. Second operand 5 states. [2020-10-28 13:37:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:18,230 INFO L93 Difference]: Finished difference Result 10006 states and 11995 transitions. [2020-10-28 13:37:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:18,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-28 13:37:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:18,257 INFO L225 Difference]: With dead ends: 10006 [2020-10-28 13:37:18,257 INFO L226 Difference]: Without dead ends: 5455 [2020-10-28 13:37:18,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:37:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2020-10-28 13:37:18,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5017. [2020-10-28 13:37:18,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5017 states. [2020-10-28 13:37:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 5998 transitions. [2020-10-28 13:37:18,430 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 5998 transitions. Word has length 261 [2020-10-28 13:37:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:18,430 INFO L481 AbstractCegarLoop]: Abstraction has 5017 states and 5998 transitions. [2020-10-28 13:37:18,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:18,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 5998 transitions. [2020-10-28 13:37:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 13:37:18,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:18,437 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:18,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:37:18,438 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:18,438 INFO L82 PathProgramCache]: Analyzing trace with hash 918205216, now seen corresponding path program 1 times [2020-10-28 13:37:18,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:18,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014614796] [2020-10-28 13:37:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:21,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:23,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-28 13:37:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:37:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 13:37:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:23,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:37:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:37:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:37:23,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:23,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:23,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:23,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:23,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:23,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:24,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:24,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:37:24,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:24,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:37:24,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:24,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:37:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:37:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:24,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:24,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:24,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:37:24,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:37:24,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:24,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:37:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:37:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-28 13:37:24,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014614796] [2020-10-28 13:37:24,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:24,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:37:24,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098582684] [2020-10-28 13:37:24,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:37:24,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:24,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:37:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:37:24,477 INFO L87 Difference]: Start difference. First operand 5017 states and 5998 transitions. Second operand 5 states. [2020-10-28 13:37:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:37,621 INFO L93 Difference]: Finished difference Result 13126 states and 15946 transitions. [2020-10-28 13:37:37,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:37:37,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2020-10-28 13:37:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:37,664 INFO L225 Difference]: With dead ends: 13126 [2020-10-28 13:37:37,664 INFO L226 Difference]: Without dead ends: 7230 [2020-10-28 13:37:37,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:37:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2020-10-28 13:37:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7223. [2020-10-28 13:37:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7223 states. [2020-10-28 13:37:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 8419 transitions. [2020-10-28 13:37:37,952 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 8419 transitions. Word has length 277 [2020-10-28 13:37:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:37,952 INFO L481 AbstractCegarLoop]: Abstraction has 7223 states and 8419 transitions. [2020-10-28 13:37:37,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:37:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 8419 transitions. [2020-10-28 13:37:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-28 13:37:37,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:37,960 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:37,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:37:37,961 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:37,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:37,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1119114740, now seen corresponding path program 1 times [2020-10-28 13:37:37,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:37,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854511126] [2020-10-28 13:37:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:41,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:37:41,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:42,195 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:37:42,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:37:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:42,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:42,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:37:42,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:42,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:37:42,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:37:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:42,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:37:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:37:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:42,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:42,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:37:42,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:37:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:37:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:37:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:37:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:37:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:37:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:37:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 13:37:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:37:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:37:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:37:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:37:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:37:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:37:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 223 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:37:43,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854511126] [2020-10-28 13:37:43,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:37:43,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:37:43,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692634571] [2020-10-28 13:37:43,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:37:43,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:37:43,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:37:43,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:37:43,052 INFO L87 Difference]: Start difference. First operand 7223 states and 8419 transitions. Second operand 7 states. [2020-10-28 13:37:51,424 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:37:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:37:59,582 INFO L93 Difference]: Finished difference Result 15320 states and 17986 transitions. [2020-10-28 13:37:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:37:59,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-28 13:37:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:37:59,608 INFO L225 Difference]: With dead ends: 15320 [2020-10-28 13:37:59,608 INFO L226 Difference]: Without dead ends: 8103 [2020-10-28 13:37:59,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:37:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2020-10-28 13:37:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 7662. [2020-10-28 13:37:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7662 states. [2020-10-28 13:37:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7662 states to 7662 states and 8924 transitions. [2020-10-28 13:37:59,830 INFO L78 Accepts]: Start accepts. Automaton has 7662 states and 8924 transitions. Word has length 283 [2020-10-28 13:37:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:37:59,830 INFO L481 AbstractCegarLoop]: Abstraction has 7662 states and 8924 transitions. [2020-10-28 13:37:59,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:37:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7662 states and 8924 transitions. [2020-10-28 13:37:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 13:37:59,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:37:59,840 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:37:59,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:37:59,841 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:37:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:37:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1649620189, now seen corresponding path program 1 times [2020-10-28 13:37:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:37:59,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527532532] [2020-10-28 13:37:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:37:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:37:59,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:00,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:04,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4775 [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:04,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:38:04,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:38:04,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:38:04,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:04,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:04,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:04,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:38:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:04,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:04,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:05,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:38:05,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:38:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:05,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:05,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:05,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:38:05,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:05,410 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 81 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 13:38:05,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527532532] [2020-10-28 13:38:05,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:05,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:05,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384192502] [2020-10-28 13:38:05,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:05,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:05,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:05,413 INFO L87 Difference]: Start difference. First operand 7662 states and 8924 transitions. Second operand 5 states. [2020-10-28 13:38:05,548 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:38:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:38:20,989 INFO L93 Difference]: Finished difference Result 18398 states and 21839 transitions. [2020-10-28 13:38:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:38:20,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-10-28 13:38:20,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:38:21,031 INFO L225 Difference]: With dead ends: 18398 [2020-10-28 13:38:21,031 INFO L226 Difference]: Without dead ends: 10742 [2020-10-28 13:38:21,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:38:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10742 states. [2020-10-28 13:38:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10742 to 9860. [2020-10-28 13:38:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9860 states. [2020-10-28 13:38:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9860 states to 9860 states and 11649 transitions. [2020-10-28 13:38:21,287 INFO L78 Accepts]: Start accepts. Automaton has 9860 states and 11649 transitions. Word has length 317 [2020-10-28 13:38:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:38:21,288 INFO L481 AbstractCegarLoop]: Abstraction has 9860 states and 11649 transitions. [2020-10-28 13:38:21,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:38:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9860 states and 11649 transitions. [2020-10-28 13:38:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 13:38:21,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:38:21,300 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:38:21,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:38:21,301 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:38:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:38:21,301 INFO L82 PathProgramCache]: Analyzing trace with hash 631131989, now seen corresponding path program 1 times [2020-10-28 13:38:21,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:38:21,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94913127] [2020-10-28 13:38:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:38:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:21,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:21,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3401 [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:38:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 309 [2020-10-28 13:38:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 13:38:24,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:38:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:24,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:24,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:24,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:24,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:38:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:25,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:25,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:38:25,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:25,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:38:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:25,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:38:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:38:25,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:38:25,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-28 13:38:25,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:38:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 13:38:25,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94913127] [2020-10-28 13:38:25,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:38:25,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:38:25,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743886983] [2020-10-28 13:38:25,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:38:25,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:38:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:38:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:38:25,435 INFO L87 Difference]: Start difference. First operand 9860 states and 11649 transitions. Second operand 5 states. [2020-10-28 13:38:26,699 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66