/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:43,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:43,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:43,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:43,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:43,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:43,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:43,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:43,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:43,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:43,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:43,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:43,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:43,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:43,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:43,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:43,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:43,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:43,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:43,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:43,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:43,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:43,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:43,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:43,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:43,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:43,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:43,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:43,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:43,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:43,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:43,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:43,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:43,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:43,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:43,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:43,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:43,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:43,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:43,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:43,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:43,940 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 [2020-09-25 04:25:43,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:43,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:43,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:43,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:43,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:43,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:43,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:43,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:43,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:43,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:43,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:43,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:43,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:43,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:43,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:43,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:43,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:43,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:43,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:43,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:43,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:43,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:43,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:43,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=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=0.2;log-additional-information=true; [2020-09-25 04:25:44,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:44,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:44,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:44,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:44,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:44,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 04:25:44,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6f45346/d682c03e588a4486a5864fd38fd95e0d/FLAG491247466 [2020-09-25 04:25:45,290 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:45,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 04:25:45,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6f45346/d682c03e588a4486a5864fd38fd95e0d/FLAG491247466 [2020-09-25 04:25:45,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe6f45346/d682c03e588a4486a5864fd38fd95e0d [2020-09-25 04:25:45,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:45,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:45,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:45,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:45,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:45,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:45" (1/1) ... [2020-09-25 04:25:45,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:45, skipping insertion in model container [2020-09-25 04:25:45,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:45" (1/1) ... [2020-09-25 04:25:45,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:45,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:46,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:46,137 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:46,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:46,379 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:46,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46 WrapperNode [2020-09-25 04:25:46,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:46,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:46,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:46,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:46,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (1/1) ... [2020-09-25 04:25:46,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:46,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:46,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:46,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:46,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (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 [2020-09-25 04:25:46,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:46,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:46,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:46,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:48,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:48,015 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:48,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:48 BoogieIcfgContainer [2020-09-25 04:25:48,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:48,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:48,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:48,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:48,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:45" (1/3) ... [2020-09-25 04:25:48,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:48, skipping insertion in model container [2020-09-25 04:25:48,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:46" (2/3) ... [2020-09-25 04:25:48,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccd0667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:48, skipping insertion in model container [2020-09-25 04:25:48,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:48" (3/3) ... [2020-09-25 04:25:48,035 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 04:25:48,047 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:48,059 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:48,082 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:48,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:48,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:48,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:48,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:48,117 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:48,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:48,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:48,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 04:25:48,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:48,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:48,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 04:25:48,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:48,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472671411] [2020-09-25 04:25:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:48,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:49,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 04:25:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:25:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:25:53,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:25:53,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 04:25:53,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:25:53,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:53,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:53,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:25:53,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:25:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:25:53,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472671411] [2020-09-25 04:25:53,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:53,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:53,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756092576] [2020-09-25 04:25:53,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:53,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:53,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:53,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:53,834 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:25:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:56,400 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 04:25:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:25:56,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 04:25:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:56,440 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 04:25:56,440 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 04:25:56,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:25:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 04:25:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 04:25:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:25:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 04:25:56,627 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 04:25:56,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:56,631 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 04:25:56,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:25:56,632 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 04:25:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 04:25:56,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:56,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:56,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:25:56,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 04:25:56,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:56,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161087975] [2020-09-25 04:25:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:26:01,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:01,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:26:01,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:26:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:26:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:01,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:01,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:26:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:01,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:02,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:02,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:26:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:02,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:26:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:02,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:02,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161087975] [2020-09-25 04:26:02,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:02,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:02,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218195046] [2020-09-25 04:26:02,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:02,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:02,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:02,100 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 7 states. [2020-09-25 04:26:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:04,592 INFO L93 Difference]: Finished difference Result 1653 states and 2070 transitions. [2020-09-25 04:26:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:04,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 04:26:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:04,600 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 04:26:04,601 INFO L226 Difference]: Without dead ends: 1074 [2020-09-25 04:26:04,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-25 04:26:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 973. [2020-09-25 04:26:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-25 04:26:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1199 transitions. [2020-09-25 04:26:04,646 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1199 transitions. Word has length 162 [2020-09-25 04:26:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:04,647 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1199 transitions. [2020-09-25 04:26:04,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1199 transitions. [2020-09-25 04:26:04,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 04:26:04,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:04,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:04,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:04,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 04:26:04,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:04,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595120541] [2020-09-25 04:26:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 04:26:09,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:09,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:26:09,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:26:09,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:26:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:09,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:26:09,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:09,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:09,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:09,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:26:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:26:09,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:10,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595120541] [2020-09-25 04:26:10,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:10,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:26:10,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091220758] [2020-09-25 04:26:10,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:26:10,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:10,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:26:10,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:10,090 INFO L87 Difference]: Start difference. First operand 973 states and 1199 transitions. Second operand 6 states. [2020-09-25 04:26:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:12,869 INFO L93 Difference]: Finished difference Result 2832 states and 3680 transitions. [2020-09-25 04:26:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:26:12,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 04:26:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:12,890 INFO L225 Difference]: With dead ends: 2832 [2020-09-25 04:26:12,890 INFO L226 Difference]: Without dead ends: 1883 [2020-09-25 04:26:12,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:12,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2020-09-25 04:26:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1690. [2020-09-25 04:26:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-09-25 04:26:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2174 transitions. [2020-09-25 04:26:12,989 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2174 transitions. Word has length 169 [2020-09-25 04:26:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:12,991 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 2174 transitions. [2020-09-25 04:26:12,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:26:12,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2174 transitions. [2020-09-25 04:26:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 04:26:13,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:13,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:13,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:13,001 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1796474422, now seen corresponding path program 1 times [2020-09-25 04:26:13,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:13,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46412941] [2020-09-25 04:26:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:13,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:18,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 04:26:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:18,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:26:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:18,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:18,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:26:18,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:18,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:18,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:26:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:26:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:18,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:18,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:26:18,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:18,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46412941] [2020-09-25 04:26:18,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:18,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:18,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692149587] [2020-09-25 04:26:18,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:18,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:18,413 INFO L87 Difference]: Start difference. First operand 1690 states and 2174 transitions. Second operand 7 states. [2020-09-25 04:26:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:20,537 INFO L93 Difference]: Finished difference Result 3540 states and 4608 transitions. [2020-09-25 04:26:20,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:26:20,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-25 04:26:20,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:20,555 INFO L225 Difference]: With dead ends: 3540 [2020-09-25 04:26:20,555 INFO L226 Difference]: Without dead ends: 1874 [2020-09-25 04:26:20,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:26:20,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-09-25 04:26:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1696. [2020-09-25 04:26:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2020-09-25 04:26:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2183 transitions. [2020-09-25 04:26:20,643 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2183 transitions. Word has length 194 [2020-09-25 04:26:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:20,643 INFO L479 AbstractCegarLoop]: Abstraction has 1696 states and 2183 transitions. [2020-09-25 04:26:20,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:20,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2183 transitions. [2020-09-25 04:26:20,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 04:26:20,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:20,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:20,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:20,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:20,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:20,656 INFO L82 PathProgramCache]: Analyzing trace with hash 382333289, now seen corresponding path program 1 times [2020-09-25 04:26:20,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:20,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382781430] [2020-09-25 04:26:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 04:26:25,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:26:25,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:26:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 04:26:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:26:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:25,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:25,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:25,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:25,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:25,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:26:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:26:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:26,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382781430] [2020-09-25 04:26:26,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:26,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:26:26,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993788814] [2020-09-25 04:26:26,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:26,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:26,039 INFO L87 Difference]: Start difference. First operand 1696 states and 2183 transitions. Second operand 8 states. [2020-09-25 04:26:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:29,339 INFO L93 Difference]: Finished difference Result 5148 states and 6968 transitions. [2020-09-25 04:26:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:26:29,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-25 04:26:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:29,366 INFO L225 Difference]: With dead ends: 5148 [2020-09-25 04:26:29,366 INFO L226 Difference]: Without dead ends: 3476 [2020-09-25 04:26:29,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:26:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2020-09-25 04:26:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 2482. [2020-09-25 04:26:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-09-25 04:26:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3161 transitions. [2020-09-25 04:26:29,489 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3161 transitions. Word has length 201 [2020-09-25 04:26:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:29,490 INFO L479 AbstractCegarLoop]: Abstraction has 2482 states and 3161 transitions. [2020-09-25 04:26:29,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3161 transitions. [2020-09-25 04:26:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 04:26:29,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:29,503 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:29,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:29,503 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1856671123, now seen corresponding path program 1 times [2020-09-25 04:26:29,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:29,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718832302] [2020-09-25 04:26:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking...