/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:52,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:52,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:52,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:52,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:52,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:52,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:52,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:52,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:52,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:52,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:52,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:52,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:52,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:52,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:52,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:52,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:52,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:52,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:52,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:52,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:52,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:52,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:52,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:52,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:52,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:52,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:52,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:52,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:52,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:52,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:52,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:52,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:52,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:52,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:52,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:52,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:52,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:52,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:52,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:52,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:52,392 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 04:25:52,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:52,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:52,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:52,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:52,445 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:52,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:52,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:52,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:52,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:52,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:52,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:52,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:52,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:52,448 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:52,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:52,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:52,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:52,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:52,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:52,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:52,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:52,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:52,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:52,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:52,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:52,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:52,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:52,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:52,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:52,452 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 04:25:52,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:52,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:52,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:52,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:52,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:52,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 04:25:53,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb54a947/c2710236dd7b43868dab4fa4a924113e/FLAG96b2eaaeb [2020-09-25 04:25:53,706 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:53,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 04:25:53,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb54a947/c2710236dd7b43868dab4fa4a924113e/FLAG96b2eaaeb [2020-09-25 04:25:53,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2cb54a947/c2710236dd7b43868dab4fa4a924113e [2020-09-25 04:25:53,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:53,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:53,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:53,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:53,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:53,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:53" (1/1) ... [2020-09-25 04:25:53,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768da4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:53, skipping insertion in model container [2020-09-25 04:25:53,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:53" (1/1) ... [2020-09-25 04:25:54,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:54,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:54,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:54,777 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:54,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:54,885 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:54,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54 WrapperNode [2020-09-25 04:25:54,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:54,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:54,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:54,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:54,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:54,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:54,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:54,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:54,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:54,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:55,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (1/1) ... [2020-09-25 04:25:55,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:55,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:55,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:55,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:55,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (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 04:25:55,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:55,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:55,099 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:55,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:56,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:56,446 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:56,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:56 BoogieIcfgContainer [2020-09-25 04:25:56,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:56,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:56,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:56,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:56,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:53" (1/3) ... [2020-09-25 04:25:56,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbf2a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:56, skipping insertion in model container [2020-09-25 04:25:56,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:54" (2/3) ... [2020-09-25 04:25:56,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbf2a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:56, skipping insertion in model container [2020-09-25 04:25:56,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:56" (3/3) ... [2020-09-25 04:25:56,476 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 04:25:56,490 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:56,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:56,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:56,559 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:56,559 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:56,560 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:56,560 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:56,560 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:56,560 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:56,560 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:56,560 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 04:25:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:56,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:56,619 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:56,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 04:25:56,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:56,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674424918] [2020-09-25 04:25:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:01,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:01,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 04:26:01,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:26:01,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 04:26:01,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:01,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:01,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:26:01,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 04:26:01,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:02,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:02,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:02,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:02,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:02,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:02,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:02,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:02,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:26:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:02,294 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 04:26:02,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674424918] [2020-09-25 04:26:02,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:02,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:26:02,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034333998] [2020-09-25 04:26:02,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:02,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:02,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:02,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:02,334 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 04:26:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:04,578 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 04:26:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:04,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 04:26:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:04,606 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 04:26:04,606 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 04:26:04,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:04,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 04:26:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 04:26:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 04:26:04,729 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 04:26:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:04,731 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 04:26:04,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 04:26:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:26:04,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:04,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:04,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:04,746 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:04,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 04:26:04,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:04,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167618530] [2020-09-25 04:26:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 04:26:09,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:26:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:26:09,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:26:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:26:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:09,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:26:09,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:09,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:26:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:26:09,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:09,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:10,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167618530] [2020-09-25 04:26:10,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:10,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:10,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594406560] [2020-09-25 04:26:10,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:10,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:10,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:10,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:10,039 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 7 states. [2020-09-25 04:26:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:12,355 INFO L93 Difference]: Finished difference Result 1483 states and 1856 transitions. [2020-09-25 04:26:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:26:12,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 04:26:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:12,368 INFO L225 Difference]: With dead ends: 1483 [2020-09-25 04:26:12,368 INFO L226 Difference]: Without dead ends: 904 [2020-09-25 04:26:12,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 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 04:26:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-09-25 04:26:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 806. [2020-09-25 04:26:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 04:26:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 971 transitions. [2020-09-25 04:26:12,436 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 971 transitions. Word has length 163 [2020-09-25 04:26:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:12,436 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 971 transitions. [2020-09-25 04:26:12,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 971 transitions. [2020-09-25 04:26:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 04:26:12,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:12,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:12,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:12,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:12,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:12,442 INFO L82 PathProgramCache]: Analyzing trace with hash -769516074, now seen corresponding path program 1 times [2020-09-25 04:26:12,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:12,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861684309] [2020-09-25 04:26:12,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:12,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 04:26:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:17,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 04:26:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:17,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:17,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:17,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:17,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:17,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:17,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:17,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:17,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:17,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:26:17,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:17,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:17,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:17,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:17,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:17,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861684309] [2020-09-25 04:26:17,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:17,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:17,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105904531] [2020-09-25 04:26:17,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:17,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:17,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:17,771 INFO L87 Difference]: Start difference. First operand 806 states and 971 transitions. Second operand 5 states. [2020-09-25 04:26:19,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:19,755 INFO L93 Difference]: Finished difference Result 2093 states and 2633 transitions. [2020-09-25 04:26:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:19,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 04:26:19,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:19,767 INFO L225 Difference]: With dead ends: 2093 [2020-09-25 04:26:19,767 INFO L226 Difference]: Without dead ends: 1311 [2020-09-25 04:26:19,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-09-25 04:26:19,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1241. [2020-09-25 04:26:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-25 04:26:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1540 transitions. [2020-09-25 04:26:19,829 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1540 transitions. Word has length 163 [2020-09-25 04:26:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:19,831 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1540 transitions. [2020-09-25 04:26:19,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1540 transitions. [2020-09-25 04:26:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:26:19,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:19,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:19,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:19,839 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash 2135172696, now seen corresponding path program 1 times [2020-09-25 04:26:19,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:19,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148383646] [2020-09-25 04:26:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:26:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:26:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:24,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:25,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:26:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:26:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:26:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:25,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:25,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:26:25,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:25,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 04:26:25,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:25,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:25,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:25,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:26:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:25,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148383646] [2020-09-25 04:26:25,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:25,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:25,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137843503] [2020-09-25 04:26:25,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:25,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:25,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:25,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:25,256 INFO L87 Difference]: Start difference. First operand 1241 states and 1540 transitions. Second operand 8 states. [2020-09-25 04:26:25,823 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 04:26:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:28,399 INFO L93 Difference]: Finished difference Result 3597 states and 4704 transitions. [2020-09-25 04:26:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:26:28,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 04:26:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:28,416 INFO L225 Difference]: With dead ends: 3597 [2020-09-25 04:26:28,416 INFO L226 Difference]: Without dead ends: 2380 [2020-09-25 04:26:28,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:26:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-09-25 04:26:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1978. [2020-09-25 04:26:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1978 states. [2020-09-25 04:26:28,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2547 transitions. [2020-09-25 04:26:28,516 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2547 transitions. Word has length 179 [2020-09-25 04:26:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:28,516 INFO L479 AbstractCegarLoop]: Abstraction has 1978 states and 2547 transitions. [2020-09-25 04:26:28,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2547 transitions. [2020-09-25 04:26:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 04:26:28,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:28,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:28,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:28,528 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:28,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2110153506, now seen corresponding path program 1 times [2020-09-25 04:26:28,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:28,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948740667] [2020-09-25 04:26:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:33,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 04:26:33,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:33,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:33,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:33,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:33,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:26:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 04:26:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:26:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:33,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:33,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:33,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:26:33,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:33,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:33,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:33,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:26:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:33,921 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 04:26:33,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948740667] [2020-09-25 04:26:33,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:33,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:33,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390467494] [2020-09-25 04:26:33,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:33,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:33,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:33,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:33,924 INFO L87 Difference]: Start difference. First operand 1978 states and 2547 transitions. Second operand 8 states. [2020-09-25 04:26:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:36,930 INFO L93 Difference]: Finished difference Result 6670 states and 9191 transitions. [2020-09-25 04:26:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:26:36,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-09-25 04:26:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:36,956 INFO L225 Difference]: With dead ends: 6670 [2020-09-25 04:26:36,956 INFO L226 Difference]: Without dead ends: 4716 [2020-09-25 04:26:36,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:26:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4716 states. [2020-09-25 04:26:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4716 to 4516. [2020-09-25 04:26:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4516 states. [2020-09-25 04:26:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 5704 transitions. [2020-09-25 04:26:37,114 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 5704 transitions. Word has length 198 [2020-09-25 04:26:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:37,115 INFO L479 AbstractCegarLoop]: Abstraction has 4516 states and 5704 transitions. [2020-09-25 04:26:37,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 5704 transitions. [2020-09-25 04:26:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 04:26:37,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:37,134 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, 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] [2020-09-25 04:26:37,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:37,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:37,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1957216297, now seen corresponding path program 1 times [2020-09-25 04:26:37,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:37,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222350286] [2020-09-25 04:26:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:37,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:39,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 04:26:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:42,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:26:42,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:42,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:42,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:26:42,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:42,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:42,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:42,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 04:26:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:42,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222350286] [2020-09-25 04:26:42,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:42,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:42,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088131570] [2020-09-25 04:26:42,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:42,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:42,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:42,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:42,434 INFO L87 Difference]: Start difference. First operand 4516 states and 5704 transitions. Second operand 7 states.