/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/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:14:23,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:14:23,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:14:23,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:14:23,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:14:23,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:14:23,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:14:23,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:14:23,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:14:23,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:14:23,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:14:23,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:14:23,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:14:23,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:14:23,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:14:23,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:14:23,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:14:23,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:14:23,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:14:23,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:14:23,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:14:23,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:14:23,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:14:23,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:14:23,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:14:23,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:14:23,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:14:23,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:14:23,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:14:24,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:14:24,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:14:24,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:14:24,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:14:24,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:14:24,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:14:24,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:14:24,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:14:24,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:14:24,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:14:24,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:14:24,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:14:24,020 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 17:14:24,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:14:24,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:14:24,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:14:24,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:14:24,083 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:14:24,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:14:24,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:14:24,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:14:24,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:14:24,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:14:24,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:14:24,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:14:24,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:14:24,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:14:24,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:14:24,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:14:24,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:14:24,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:14:24,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:14:24,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:14:24,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:14:24,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:14:24,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:14:24,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:14:24,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:14:24,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:14:24,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:14:24,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:14:24,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:14:24,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:14:24,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:14:24,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:14:24,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:14:24,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:14:24,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:14:24,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-28 17:14:24,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efec25399/cd8f32ba70f446a592fea7a925ffa7b7/FLAGea34a6331 [2020-10-28 17:14:25,291 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:14:25,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-10-28 17:14:25,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efec25399/cd8f32ba70f446a592fea7a925ffa7b7/FLAGea34a6331 [2020-10-28 17:14:25,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efec25399/cd8f32ba70f446a592fea7a925ffa7b7 [2020-10-28 17:14:25,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:14:25,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:14:25,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:14:25,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:14:25,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:14:25,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:14:25" (1/1) ... [2020-10-28 17:14:25,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b372891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:25, skipping insertion in model container [2020-10-28 17:14:25,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:14:25" (1/1) ... [2020-10-28 17:14:25,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:14:25,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:14:25,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:14:25,986 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:14:26,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:14:26,018 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:14:26,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26 WrapperNode [2020-10-28 17:14:26,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:14:26,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:14:26,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:14:26,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:14:26,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (1/1) ... [2020-10-28 17:14:26,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:14:26,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:14:26,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:14:26,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:14:26,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (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 17:14:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:14:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:14:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:14:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-28 17:14:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:14:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:14:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:14:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:14:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:14:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:14:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:14:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:14:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:14:26,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:14:26,375 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 17:14:26,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:14:26 BoogieIcfgContainer [2020-10-28 17:14:26,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:14:26,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:14:26,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:14:26,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:14:26,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:14:25" (1/3) ... [2020-10-28 17:14:26,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6a427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:14:26, skipping insertion in model container [2020-10-28 17:14:26,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:14:26" (2/3) ... [2020-10-28 17:14:26,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6a427e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:14:26, skipping insertion in model container [2020-10-28 17:14:26,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:14:26" (3/3) ... [2020-10-28 17:14:26,388 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-10-28 17:14:26,401 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:14:26,406 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:14:26,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:14:26,481 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:14:26,481 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:14:26,482 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:14:26,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:14:26,482 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:14:26,482 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:14:26,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:14:26,483 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:14:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-28 17:14:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 17:14:26,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:26,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:26,516 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:26,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2107265492, now seen corresponding path program 1 times [2020-10-28 17:14:26,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:26,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831616471] [2020-10-28 17:14:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:27,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:27,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 17:14:27,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:27,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-28 17:14:27,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:27,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:14:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:14:27,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:14:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:14:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:27,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:14:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:27,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:27,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 17:14:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:27,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:14:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:27,343 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 17:14:27,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831616471] [2020-10-28 17:14:27,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:14:27,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:14:27,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297010142] [2020-10-28 17:14:27,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:14:27,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:14:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:14:27,380 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2020-10-28 17:14:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:27,667 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-10-28 17:14:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:14:27,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-28 17:14:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:27,679 INFO L225 Difference]: With dead ends: 41 [2020-10-28 17:14:27,680 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 17:14:27,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:14:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 17:14:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 17:14:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 17:14:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-28 17:14:27,749 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2020-10-28 17:14:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:27,750 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-28 17:14:27,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:14:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-28 17:14:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 17:14:27,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:27,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:27,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:14:27,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:27,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1001048603, now seen corresponding path program 1 times [2020-10-28 17:14:27,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:27,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751985565] [2020-10-28 17:14:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:14:27,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 17:14:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:27,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:14:27,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:14:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:14:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 17:14:27,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:28,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:28,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:14:28,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:28,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:28,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:28,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:28,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:14:28,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:28,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:14:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:14:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:28,108 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 17:14:28,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751985565] [2020-10-28 17:14:28,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:14:28,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:14:28,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930057373] [2020-10-28 17:14:28,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:14:28,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:28,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:14:28,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:14:28,114 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2020-10-28 17:14:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:28,336 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-10-28 17:14:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:14:28,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-28 17:14:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:28,339 INFO L225 Difference]: With dead ends: 30 [2020-10-28 17:14:28,339 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 17:14:28,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:14:28,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 17:14:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-28 17:14:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 17:14:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-28 17:14:28,352 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-10-28 17:14:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:28,352 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-28 17:14:28,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:14:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-28 17:14:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-28 17:14:28,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:28,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:28,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:14:28,354 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash -768223736, now seen corresponding path program 1 times [2020-10-28 17:14:28,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:28,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014928438] [2020-10-28 17:14:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:28,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:29,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 17:14:29,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:14:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-28 17:14:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:29,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:14:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:14:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:29,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:29,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:14:29,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:29,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:29,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:29,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:14:29,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:14:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 17:14:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:29,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:14:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:29,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:29,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:14:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:29,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:14:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:14:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:29,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:29,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:29,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:29,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:14:29,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:29,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:14:29,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:29,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 17:14:29,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014928438] [2020-10-28 17:14:29,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:14:29,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 17:14:29,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16305193] [2020-10-28 17:14:29,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 17:14:29,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 17:14:29,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 17:14:29,479 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 7 states. [2020-10-28 17:14:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:29,744 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-10-28 17:14:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 17:14:29,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-28 17:14:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:29,746 INFO L225 Difference]: With dead ends: 35 [2020-10-28 17:14:29,746 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 17:14:29,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:14:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 17:14:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-28 17:14:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 17:14:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-10-28 17:14:29,758 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 28 [2020-10-28 17:14:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:29,758 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-10-28 17:14:29,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 17:14:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-10-28 17:14:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 17:14:29,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:29,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:29,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:14:29,761 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:29,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1325220322, now seen corresponding path program 1 times [2020-10-28 17:14:29,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:29,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462008941] [2020-10-28 17:14:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:14:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:14:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-10-28 17:14:30,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:30,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:14:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 17:14:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:30,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:30,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:30,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:30,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:30,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:30,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 17:14:30,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:14:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 17:14:30,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:30,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:30,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:30,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 17:14:30,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:30,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:30,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:30,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:30,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:14:30,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:14:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:30,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:30,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:30,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:30,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:14:30,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:30,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:30,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:30,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:30,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 17:14:30,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462008941] [2020-10-28 17:14:30,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:14:30,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 17:14:30,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429334009] [2020-10-28 17:14:30,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 17:14:30,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 17:14:30,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-28 17:14:30,668 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 8 states. [2020-10-28 17:14:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:30,984 INFO L93 Difference]: Finished difference Result 55 states and 79 transitions. [2020-10-28 17:14:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:14:30,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-28 17:14:30,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:30,988 INFO L225 Difference]: With dead ends: 55 [2020-10-28 17:14:30,988 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 17:14:30,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:14:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 17:14:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-28 17:14:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 17:14:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2020-10-28 17:14:31,005 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 61 transitions. Word has length 30 [2020-10-28 17:14:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:31,006 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 61 transitions. [2020-10-28 17:14:31,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 17:14:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 61 transitions. [2020-10-28 17:14:31,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 17:14:31,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:31,009 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:31,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:14:31,009 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:31,010 INFO L82 PathProgramCache]: Analyzing trace with hash -38740789, now seen corresponding path program 1 times [2020-10-28 17:14:31,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:31,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075124190] [2020-10-28 17:14:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:34,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 17:14:34,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:14:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3757 [2020-10-28 17:14:34,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:34,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:14:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:14:34,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:14:34,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:14:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:34,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:14:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:34,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:34,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:34,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:35,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:37,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:14:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:14:37,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:37,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:37,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:14:37,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:14:37,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 17:14:37,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:37,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:14:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:37,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:14:37,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:37,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:37,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:37,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:14:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:37,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:14:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:37,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:14:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:37,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:37,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:14:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:14:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:14:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:37,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:14:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:37,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 17:14:37,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075124190] [2020-10-28 17:14:37,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:14:37,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 17:14:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821777686] [2020-10-28 17:14:37,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:14:37,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:37,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:14:37,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:14:37,720 INFO L87 Difference]: Start difference. First operand 42 states and 61 transitions. Second operand 9 states. [2020-10-28 17:14:38,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:38,171 INFO L93 Difference]: Finished difference Result 99 states and 161 transitions. [2020-10-28 17:14:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:14:38,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-28 17:14:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:38,175 INFO L225 Difference]: With dead ends: 99 [2020-10-28 17:14:38,176 INFO L226 Difference]: Without dead ends: 62 [2020-10-28 17:14:38,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:14:38,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-28 17:14:38,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2020-10-28 17:14:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 17:14:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-10-28 17:14:38,206 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 42 [2020-10-28 17:14:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:38,207 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-10-28 17:14:38,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:14:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-10-28 17:14:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:14:38,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:38,215 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:38,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:14:38,216 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:38,216 INFO L82 PathProgramCache]: Analyzing trace with hash 390219072, now seen corresponding path program 2 times [2020-10-28 17:14:38,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:38,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674316378] [2020-10-28 17:14:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:38,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:38,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:43,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 17:14:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 17:14:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:14:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:43,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:14:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:14:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 17:14:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:43,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:43,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:43,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:48,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 17:14:48,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 17:14:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:14:48,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:48,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:14:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 17:14:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 17:14:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:48,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:14:48,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:14:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 17:14:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:48,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:48,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:14:48,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:48,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:14:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:48,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:14:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:14:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:48,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:14:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:14:48,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:48,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:14:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:48,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:14:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:48,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 17:14:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 17:14:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-28 17:14:49,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:49,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:14:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:14:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 17:14:49,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:49,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:49,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:49,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:14:49,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:14:49,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 17:14:49,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:49,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:14:49,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:49,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:14:49,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:14:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:14:50,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:50,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:14:50,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:50,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:14:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:14:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:50,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:50,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:50,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:50,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:14:50,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:50,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:50,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:50,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:14:50,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:14:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:14:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:50,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:14:50,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:14:50,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:50,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:14:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:50,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:14:50,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 53 proven. 71 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-28 17:14:50,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674316378] [2020-10-28 17:14:50,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:14:50,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 17:14:50,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170188730] [2020-10-28 17:14:50,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:14:50,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:14:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:14:50,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:14:50,072 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 13 states. [2020-10-28 17:14:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:14:50,798 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2020-10-28 17:14:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 17:14:50,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 17:14:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:14:50,801 INFO L225 Difference]: With dead ends: 92 [2020-10-28 17:14:50,801 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 17:14:50,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-28 17:14:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 17:14:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-10-28 17:14:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 17:14:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2020-10-28 17:14:50,813 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 69 [2020-10-28 17:14:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:14:50,814 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2020-10-28 17:14:50,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:14:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2020-10-28 17:14:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:14:50,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:14:50,817 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:14:50,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:14:50,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:14:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:14:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -932278797, now seen corresponding path program 3 times [2020-10-28 17:14:50,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:14:50,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977905830] [2020-10-28 17:14:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:14:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:51,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:54,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:54,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:55,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 17:14:55,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 17:14:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:14:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:55,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:14:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 17:14:55,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:14:55,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:14:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:14:55,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:14:55,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:14:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:14:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:14:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:14:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:14:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:56,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:14:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:00,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:00,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:15:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:15:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 17:15:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:15:01,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:15:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 17:15:01,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:01,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:15:01,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:01,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 17:15:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:01,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:01,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:01,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 17:15:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 17:15:01,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:01,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 17:15:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:01,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:01,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:01,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:01,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:01,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:01,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:01,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:01,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 49 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 17:15:01,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977905830] [2020-10-28 17:15:01,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:01,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:15:01,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753573279] [2020-10-28 17:15:01,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:15:01,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:01,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:15:01,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:15:01,428 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand 10 states. [2020-10-28 17:15:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:02,019 INFO L93 Difference]: Finished difference Result 76 states and 106 transitions. [2020-10-28 17:15:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 17:15:02,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-28 17:15:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:02,021 INFO L225 Difference]: With dead ends: 76 [2020-10-28 17:15:02,021 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 17:15:02,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:15:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 17:15:02,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 17:15:02,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 17:15:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-28 17:15:02,030 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 68 [2020-10-28 17:15:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:02,031 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-28 17:15:02,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:15:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-28 17:15:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 17:15:02,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:02,033 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:02,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:15:02,034 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:02,034 INFO L82 PathProgramCache]: Analyzing trace with hash -234474472, now seen corresponding path program 4 times [2020-10-28 17:15:02,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:02,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326753975] [2020-10-28 17:15:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:02,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:03,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:07,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 17:15:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:07,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:07,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:15:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 17:15:12,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 17:15:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 17:15:12,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 17:15:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:15:12,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:12,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:15:12,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:12,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:15:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:15:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:15:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:12,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:15:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:15:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:12,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:15:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 17:15:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:12,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:12,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:12,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:12,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:15:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:12,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:12,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:12,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 17:15:12,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326753975] [2020-10-28 17:15:12,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:12,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 17:15:12,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545904693] [2020-10-28 17:15:12,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:15:12,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:12,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:15:12,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:15:12,722 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 10 states. [2020-10-28 17:15:13,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:13,345 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2020-10-28 17:15:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 17:15:13,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-10-28 17:15:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:13,352 INFO L225 Difference]: With dead ends: 81 [2020-10-28 17:15:13,352 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 17:15:13,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:15:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 17:15:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-28 17:15:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 17:15:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-10-28 17:15:13,369 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 84 [2020-10-28 17:15:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:13,369 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-10-28 17:15:13,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:15:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-10-28 17:15:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 17:15:13,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:13,371 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:13,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:15:13,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash 704043195, now seen corresponding path program 5 times [2020-10-28 17:15:13,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:13,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890490904] [2020-10-28 17:15:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:13,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:18,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:15:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 17:15:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-28 17:15:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:15:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:18,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:18,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:18,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:15:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:18,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:15:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-28 17:15:23,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 17:15:23,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:15:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:15:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:23,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:23,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:15:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:23,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:15:23,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:15:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:23,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:28,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 17:15:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 17:15:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:28,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:28,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:33,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 17:15:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:33,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-28 17:15:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:15:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 17:15:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:15:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:34,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:34,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:15:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:34,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 17:15:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 17:15:34,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-28 17:15:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-28 17:15:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:15:34,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:15:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 17:15:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:15:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:15:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:15:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:15:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:15:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 397 proven. 149 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-10-28 17:15:34,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890490904] [2020-10-28 17:15:34,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:15:34,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 17:15:34,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052728466] [2020-10-28 17:15:34,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 17:15:34,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:15:34,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 17:15:34,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-28 17:15:34,815 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 16 states. [2020-10-28 17:15:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:15:36,033 INFO L93 Difference]: Finished difference Result 194 states and 358 transitions. [2020-10-28 17:15:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 17:15:36,033 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-28 17:15:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:15:36,038 INFO L225 Difference]: With dead ends: 194 [2020-10-28 17:15:36,038 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 17:15:36,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:15:36,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 17:15:36,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-28 17:15:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 17:15:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-10-28 17:15:36,052 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 152 [2020-10-28 17:15:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:15:36,052 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-10-28 17:15:36,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 17:15:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-10-28 17:15:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 17:15:36,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:15:36,054 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:15:36,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:15:36,054 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:15:36,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:15:36,055 INFO L82 PathProgramCache]: Analyzing trace with hash -667659703, now seen corresponding path program 6 times [2020-10-28 17:15:36,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:15:36,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616994770] [2020-10-28 17:15:36,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:15:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 17:15:36,072 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 17:15:36,072 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 17:15:36,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:15:36,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 05:15:36 BoogieIcfgContainer [2020-10-28 17:15:36,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 17:15:36,104 INFO L168 Benchmark]: Toolchain (without parser) took 70420.71 ms. Allocated memory was 151.0 MB in the beginning and 593.5 MB in the end (delta: 442.5 MB). Free memory was 126.0 MB in the beginning and 508.9 MB in the end (delta: -382.9 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:36,105 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 17:15:36,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.45 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:36,107 INFO L168 Benchmark]: Boogie Preprocessor took 31.67 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:36,107 INFO L168 Benchmark]: RCFGBuilder took 325.29 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 102.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:36,108 INFO L168 Benchmark]: TraceAbstraction took 69722.07 ms. Allocated memory was 151.0 MB in the beginning and 593.5 MB in the end (delta: 442.5 MB). Free memory was 101.5 MB in the beginning and 508.9 MB in the end (delta: -407.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. [2020-10-28 17:15:36,112 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.45 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.67 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 325.29 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 102.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 69722.07 ms. Allocated memory was 151.0 MB in the beginning and 593.5 MB in the end (delta: 442.5 MB). Free memory was 101.5 MB in the beginning and 508.9 MB in the end (delta: -407.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L30] int x = __VERIFIER_nondet_int(); [L31] CALL, EXPR fibonacci(x) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND FALSE !(n == 1) [L24] CALL, EXPR fibonacci(n-1) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND TRUE n < 1 [L20] return 0; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-1) [L24] CALL, EXPR fibonacci(n-2) [L19] COND FALSE !(n < 1) [L21] COND TRUE n == 1 [L22] return 1; [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L24] RET, EXPR fibonacci(n-2) [L24] return fibonacci(n-1) + fibonacci(n-2); [L31] RET, EXPR fibonacci(x) [L31] int result = fibonacci(x); [L32] COND FALSE !(x != 5 || result == 3) [L35] CALL reach_error() [L3] __assert_fail("0", "Fibonacci04.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 69.5s, OverallIterations: 10, TraceHistogramMax: 21, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 403 SDslu, 209 SDs, 0 SdLazy, 953 SolverSat, 393 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 64.0s InterpolantComputationTime, 615 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 495 ConstructedInterpolants, 0 QuantifiedInterpolants, 102075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 1451/1887 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...