/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=0.2 --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/Problem02_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:25,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:25,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:25,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:25,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:25,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:25,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:25,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:25,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:25,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:25,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:25,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:25,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:25,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:25,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:25,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:25,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:25,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:25,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:25,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:25,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:25,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:25,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:25,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:25,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:25,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:25,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:25,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:25,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:25,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:25,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:25,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:25,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:25,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:25,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:25,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:25,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:25,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:25,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:25,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:25,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:25,987 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 11:17:26,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:26,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:26,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:26,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:26,043 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:26,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:26,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:26,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:26,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:26,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:26,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:26,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:26,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:26,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:26,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:26,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:26,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:26,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:26,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:26,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:26,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:26,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:26,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:26,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:26,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:26,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:26,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:26,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:26,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:26,050 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=0.2;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:17:26,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:26,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:26,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:26,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:26,515 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:26,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 11:17:26,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e611cfdb4/6f020944fa7b412e9488d6e4b8c48f02/FLAGfe7f77e23 [2020-09-25 11:17:27,300 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:27,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 11:17:27,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e611cfdb4/6f020944fa7b412e9488d6e4b8c48f02/FLAGfe7f77e23 [2020-09-25 11:17:27,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e611cfdb4/6f020944fa7b412e9488d6e4b8c48f02 [2020-09-25 11:17:27,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:27,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:27,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:27,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:27,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:27,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:27" (1/1) ... [2020-09-25 11:17:27,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537afa10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:27, skipping insertion in model container [2020-09-25 11:17:27,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:27" (1/1) ... [2020-09-25 11:17:27,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:27,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:28,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:28,042 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:28,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:28,257 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:28,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28 WrapperNode [2020-09-25 11:17:28,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:28,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:28,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:28,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:28,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (1/1) ... [2020-09-25 11:17:28,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:28,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:28,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:28,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:28,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (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 11:17:28,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:28,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:29,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:29,789 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:29,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:29 BoogieIcfgContainer [2020-09-25 11:17:29,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:29,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:29,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:29,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:29,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:27" (1/3) ... [2020-09-25 11:17:29,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47686c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:29, skipping insertion in model container [2020-09-25 11:17:29,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:28" (2/3) ... [2020-09-25 11:17:29,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47686c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:29, skipping insertion in model container [2020-09-25 11:17:29,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:29" (3/3) ... [2020-09-25 11:17:29,810 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 11:17:29,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:29,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:29,859 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:29,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:29,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:29,900 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:29,900 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:29,900 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:29,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:29,900 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:29,901 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 11:17:29,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:29,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:29,960 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:29,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 11:17:29,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:29,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534374675] [2020-09-25 11:17:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:30,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:32,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 11:17:35,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:35,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 11:17:35,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 11:17:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:17:35,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:17:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:35,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:17:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:35,676 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 11:17:35,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534374675] [2020-09-25 11:17:35,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:35,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:17:35,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577843227] [2020-09-25 11:17:35,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:17:35,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:17:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:17:35,722 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 11:17:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:38,161 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 11:17:38,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:17:38,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 11:17:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:38,191 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 11:17:38,191 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 11:17:38,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 11:17:38,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 11:17:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 11:17:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 11:17:38,320 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 11:17:38,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:38,322 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 11:17:38,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:17:38,322 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 11:17:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 11:17:38,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:38,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:38,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:38,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 11:17:38,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:38,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660740437] [2020-09-25 11:17:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 11:17:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 11:17:43,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 11:17:43,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 11:17:43,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:43,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:43,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:43,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:43,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:43,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:43,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:17:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:43,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660740437] [2020-09-25 11:17:43,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:43,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:43,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698460481] [2020-09-25 11:17:43,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:43,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:43,668 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 11:17:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:46,004 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 11:17:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:46,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 11:17:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:46,015 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 11:17:46,015 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 11:17:46,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:17:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 11:17:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 11:17:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 11:17:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 11:17:46,070 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 11:17:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:46,071 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 11:17:46,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 11:17:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 11:17:46,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:46,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:46,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:46,081 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 11:17:46,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:46,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525690297] [2020-09-25 11:17:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:46,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:50,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:51,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 11:17:51,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 11:17:51,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:51,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:17:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:17:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 11:17:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:51,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:17:51,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:51,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:51,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:51,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:51,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:51,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:17:51,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:51,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 11:17:51,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:51,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:51,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:17:51,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:51,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525690297] [2020-09-25 11:17:51,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:51,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:17:51,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655499355] [2020-09-25 11:17:51,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:17:51,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:51,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:17:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:17:51,826 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 10 states. [2020-09-25 11:17:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:55,343 INFO L93 Difference]: Finished difference Result 3943 states and 5382 transitions. [2020-09-25 11:17:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:17:55,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 187 [2020-09-25 11:17:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:55,369 INFO L225 Difference]: With dead ends: 3943 [2020-09-25 11:17:55,369 INFO L226 Difference]: Without dead ends: 2910 [2020-09-25 11:17:55,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:17:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-09-25 11:17:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2284. [2020-09-25 11:17:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2020-09-25 11:17:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2890 transitions. [2020-09-25 11:17:55,493 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2890 transitions. Word has length 187 [2020-09-25 11:17:55,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:55,494 INFO L479 AbstractCegarLoop]: Abstraction has 2284 states and 2890 transitions. [2020-09-25 11:17:55,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:17:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2890 transitions. [2020-09-25 11:17:55,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 11:17:55,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:55,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:55,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:55,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 11:17:55,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353221047] [2020-09-25 11:17:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 11:18:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:18:00,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:18:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 11:18:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:00,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:18:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:18:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:18:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 11:18:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:01,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353221047] [2020-09-25 11:18:01,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:01,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:18:01,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366049943] [2020-09-25 11:18:01,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:18:01,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:01,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:18:01,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:01,215 INFO L87 Difference]: Start difference. First operand 2284 states and 2890 transitions. Second operand 11 states. [2020-09-25 11:18:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:05,027 INFO L93 Difference]: Finished difference Result 6029 states and 7951 transitions. [2020-09-25 11:18:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:05,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-09-25 11:18:05,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:05,045 INFO L225 Difference]: With dead ends: 6029 [2020-09-25 11:18:05,046 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 11:18:05,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:18:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 11:18:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2203. [2020-09-25 11:18:05,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-09-25 11:18:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2724 transitions. [2020-09-25 11:18:05,135 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2724 transitions. Word has length 197 [2020-09-25 11:18:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:05,136 INFO L479 AbstractCegarLoop]: Abstraction has 2203 states and 2724 transitions. [2020-09-25 11:18:05,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:18:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2724 transitions. [2020-09-25 11:18:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 11:18:05,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:05,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:05,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:05,146 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 11:18:05,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:05,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105964845] [2020-09-25 11:18:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:05,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:06,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 11:18:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:18:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-09-25 11:18:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:18:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 11:18:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:10,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:18:10,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:10,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:18:10,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:18:10,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:10,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:18:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:18:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:18:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:18:10,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 11:18:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 11:18:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:10,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:10,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 11:18:10,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:10,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:18:10,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:10,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:10,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:18:10,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:18:10,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105964845] [2020-09-25 11:18:10,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:10,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:10,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956444265] [2020-09-25 11:18:10,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:10,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:10,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:10,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:10,812 INFO L87 Difference]: Start difference. First operand 2203 states and 2724 transitions. Second operand 10 states. [2020-09-25 11:18:16,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:16,849 INFO L93 Difference]: Finished difference Result 6521 states and 8671 transitions. [2020-09-25 11:18:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 11:18:16,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-09-25 11:18:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:16,877 INFO L225 Difference]: With dead ends: 6521 [2020-09-25 11:18:16,878 INFO L226 Difference]: Without dead ends: 4104 [2020-09-25 11:18:16,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:18:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2020-09-25 11:18:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3313. [2020-09-25 11:18:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2020-09-25 11:18:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 3960 transitions. [2020-09-25 11:18:17,000 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 3960 transitions. Word has length 201 [2020-09-25 11:18:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:17,000 INFO L479 AbstractCegarLoop]: Abstraction has 3313 states and 3960 transitions. [2020-09-25 11:18:17,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 3960 transitions. [2020-09-25 11:18:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 11:18:17,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:17,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:17,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:17,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:17,013 INFO L82 PathProgramCache]: Analyzing trace with hash 867383139, now seen corresponding path program 1 times [2020-09-25 11:18:17,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:17,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793643909] [2020-09-25 11:18:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:17,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking...