/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:23,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:23,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:23,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:23,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:23,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:23,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:23,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:23,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:23,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:23,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:23,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:23,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:23,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:23,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:23,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:23,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:23,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:23,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:23,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:23,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:23,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:23,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:23,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:23,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:23,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:23,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:23,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:23,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:23,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:23,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:23,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:23,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:23,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:23,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:23,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:23,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:23,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:23,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:23,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:23,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:23,281 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 14:43:23,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:23,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:23,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:23,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:23,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:23,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:23,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:23,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:23,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:23,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:23,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:23,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:23,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:23,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:23,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:23,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:23,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:23,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:23,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:23,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:23,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:23,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:23,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:23,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:23,348 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:43:23,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:23,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:23,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:23,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:23,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:23,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 14:43:23,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/451ea4948/c73173d4847243a5ab28cbd38bd5446d/FLAG79dd13970 [2020-09-25 14:43:24,597 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:24,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-25 14:43:24,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/451ea4948/c73173d4847243a5ab28cbd38bd5446d/FLAG79dd13970 [2020-09-25 14:43:24,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/451ea4948/c73173d4847243a5ab28cbd38bd5446d [2020-09-25 14:43:24,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:24,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:24,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:24,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:24,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:24,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:24, skipping insertion in model container [2020-09-25 14:43:24,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:24" (1/1) ... [2020-09-25 14:43:24,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:24,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:25,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:25,438 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:25,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:25,814 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:25,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25 WrapperNode [2020-09-25 14:43:25,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:25,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:25,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:25,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:25,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (1/1) ... [2020-09-25 14:43:25,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:25,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:25,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:25,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:25,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (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 14:43:26,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:26,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:26,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:27,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:27,899 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:27,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:27 BoogieIcfgContainer [2020-09-25 14:43:27,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:27,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:27,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:27,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:27,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:24" (1/3) ... [2020-09-25 14:43:27,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26acac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:27, skipping insertion in model container [2020-09-25 14:43:27,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:25" (2/3) ... [2020-09-25 14:43:27,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26acac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:27, skipping insertion in model container [2020-09-25 14:43:27,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:27" (3/3) ... [2020-09-25 14:43:27,919 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-25 14:43:27,931 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:27,942 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:27,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:27,998 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:27,998 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:27,999 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:27,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:27,999 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:27,999 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:27,999 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:27,999 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 14:43:28,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:28,052 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] [2020-09-25 14:43:28,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash -444760420, now seen corresponding path program 1 times [2020-09-25 14:43:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342339188] [2020-09-25 14:43:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 14:43:28,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:28,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 14:43:28,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:28,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:43:28,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:29,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:43:29,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:29,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:29,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:29,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:29,230 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 14:43:29,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342339188] [2020-09-25 14:43:29,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:29,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:29,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695240172] [2020-09-25 14:43:29,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:29,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:29,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:29,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:29,265 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 14:43:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:31,993 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 14:43:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:31,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 14:43:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:32,022 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 14:43:32,023 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 14:43:32,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 14:43:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 14:43:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 14:43:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 14:43:32,144 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 60 [2020-09-25 14:43:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:32,145 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 14:43:32,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 14:43:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:43:32,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:32,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:32,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:32,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1537556143, now seen corresponding path program 1 times [2020-09-25 14:43:32,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:32,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134944553] [2020-09-25 14:43:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:43:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4162 [2020-09-25 14:43:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:43:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:36,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:36,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:36,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:36,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 14:43:36,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:36,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:36,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:36,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134944553] [2020-09-25 14:43:36,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:36,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:36,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411100704] [2020-09-25 14:43:36,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:36,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:36,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:36,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:36,779 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 14:43:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:39,940 INFO L93 Difference]: Finished difference Result 2101 states and 2645 transitions. [2020-09-25 14:43:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:39,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-09-25 14:43:39,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:39,949 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 14:43:39,950 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 14:43:39,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 14:43:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1192. [2020-09-25 14:43:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 14:43:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1447 transitions. [2020-09-25 14:43:40,034 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1447 transitions. Word has length 139 [2020-09-25 14:43:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:40,035 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1447 transitions. [2020-09-25 14:43:40,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1447 transitions. [2020-09-25 14:43:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 14:43:40,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:40,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:40,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:40,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 791250278, now seen corresponding path program 1 times [2020-09-25 14:43:40,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:40,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650600061] [2020-09-25 14:43:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:40,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:43:42,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:42,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2690 [2020-09-25 14:43:42,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:42,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:42,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:42,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:42,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:43,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:43,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:43:43,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:43,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:43:43,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:43,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:43,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:43,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:43:43,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:43,087 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:43,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650600061] [2020-09-25 14:43:43,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:43,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:43,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124238818] [2020-09-25 14:43:43,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:43,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:43,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:43,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:43,090 INFO L87 Difference]: Start difference. First operand 1192 states and 1447 transitions. Second operand 7 states. [2020-09-25 14:43:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:46,153 INFO L93 Difference]: Finished difference Result 3085 states and 3861 transitions. [2020-09-25 14:43:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:46,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-25 14:43:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:46,163 INFO L225 Difference]: With dead ends: 3085 [2020-09-25 14:43:46,164 INFO L226 Difference]: Without dead ends: 1908 [2020-09-25 14:43:46,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-09-25 14:43:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1862. [2020-09-25 14:43:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-09-25 14:43:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2199 transitions. [2020-09-25 14:43:46,246 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2199 transitions. Word has length 142 [2020-09-25 14:43:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:46,247 INFO L479 AbstractCegarLoop]: Abstraction has 1862 states and 2199 transitions. [2020-09-25 14:43:46,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2199 transitions. [2020-09-25 14:43:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 14:43:46,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:46,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:46,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:46,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1665918402, now seen corresponding path program 1 times [2020-09-25 14:43:46,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:46,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56824190] [2020-09-25 14:43:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-09-25 14:43:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:51,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:43:51,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 14:43:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:43:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:51,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:51,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:43:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:43:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:43:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:51,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:43:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:43:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 14:43:51,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:51,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:43:51,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:52,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56824190] [2020-09-25 14:43:52,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:52,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:52,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13614727] [2020-09-25 14:43:52,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:52,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:52,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:52,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:52,168 INFO L87 Difference]: Start difference. First operand 1862 states and 2199 transitions. Second operand 8 states. [2020-09-25 14:43:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:55,660 INFO L93 Difference]: Finished difference Result 4217 states and 5171 transitions. [2020-09-25 14:43:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:55,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 247 [2020-09-25 14:43:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:55,681 INFO L225 Difference]: With dead ends: 4217 [2020-09-25 14:43:55,681 INFO L226 Difference]: Without dead ends: 2559 [2020-09-25 14:43:55,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2020-09-25 14:43:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 2519. [2020-09-25 14:43:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-09-25 14:43:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2962 transitions. [2020-09-25 14:43:55,774 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2962 transitions. Word has length 247 [2020-09-25 14:43:55,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:55,775 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2962 transitions. [2020-09-25 14:43:55,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2962 transitions. [2020-09-25 14:43:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 14:43:55,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:55,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:55,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:55,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash -192469169, now seen corresponding path program 1 times [2020-09-25 14:43:55,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:55,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069493127] [2020-09-25 14:43:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:00,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 14:44:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:44:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:44:00,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:00,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 14:44:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 14:44:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:44:00,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:00,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:00,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:44:01,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 14:44:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:01,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:44:01,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 14:44:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:01,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:44:01,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:01,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:44:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:44:01,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069493127] [2020-09-25 14:44:01,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:01,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:44:01,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545242531] [2020-09-25 14:44:01,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:44:01,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:01,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:44:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:44:01,497 INFO L87 Difference]: Start difference. First operand 2519 states and 2962 transitions. Second operand 7 states. [2020-09-25 14:44:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:04,914 INFO L93 Difference]: Finished difference Result 5434 states and 6581 transitions. [2020-09-25 14:44:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:44:04,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-09-25 14:44:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:04,929 INFO L225 Difference]: With dead ends: 5434 [2020-09-25 14:44:04,929 INFO L226 Difference]: Without dead ends: 2397 [2020-09-25 14:44:04,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:44:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-09-25 14:44:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2122. [2020-09-25 14:44:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2122 states. [2020-09-25 14:44:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 2376 transitions. [2020-09-25 14:44:04,993 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 2376 transitions. Word has length 302 [2020-09-25 14:44:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:04,993 INFO L479 AbstractCegarLoop]: Abstraction has 2122 states and 2376 transitions. [2020-09-25 14:44:04,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:44:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 2376 transitions. [2020-09-25 14:44:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-09-25 14:44:05,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:05,004 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:05,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:05,005 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:05,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1011120306, now seen corresponding path program 1 times [2020-09-25 14:44:05,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:05,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049855223] [2020-09-25 14:44:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:05,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:05,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-09-25 14:44:10,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 253 [2020-09-25 14:44:10,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 14:44:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:44:10,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:10,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:10,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 14:44:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:10,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:10,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 14:44:10,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:10,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-25 14:44:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:44:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:44:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 14:44:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:44:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:44:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-09-25 14:44:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:44:10,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:44:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 14:44:10,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:10,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:44:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:44:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 454 proven. 4 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-09-25 14:44:11,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049855223] [2020-09-25 14:44:11,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:11,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:44:11,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072160381] [2020-09-25 14:44:11,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:44:11,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:44:11,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:44:11,194 INFO L87 Difference]: Start difference. First operand 2122 states and 2376 transitions. Second operand 9 states.