/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:46,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:46,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:46,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:46,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:46,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:46,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:46,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:46,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:46,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:46,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:46,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:46,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:46,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:46,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:46,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:46,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:46,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:46,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:46,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:46,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:46,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:46,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:46,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:46,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:46,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:46,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:46,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:46,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:46,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:46,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:46,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:46,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:46,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:46,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:46,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:46,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:46,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:46,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:46,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:46,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:46,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:46,462 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:46,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:46,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:46,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:46,466 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:46,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:46,467 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:46,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:46,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:46,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:46,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:46,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:46,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:46,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:46,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:46,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:46,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:46,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:46,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:46,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:46,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:46,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:46,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:46,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:46,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:46,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:46,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:46,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:46,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:46,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:46,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:46,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:46,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:46,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:46,965 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:46,966 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 14:40:47,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acccf1e9c/0bb003e931c84bbebabb482e13311a33/FLAGa0770a6b8 [2020-09-25 14:40:47,707 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:47,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label52.c [2020-09-25 14:40:47,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acccf1e9c/0bb003e931c84bbebabb482e13311a33/FLAGa0770a6b8 [2020-09-25 14:40:47,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/acccf1e9c/0bb003e931c84bbebabb482e13311a33 [2020-09-25 14:40:47,991 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:47,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:48,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:48,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:48,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:48,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:47" (1/1) ... [2020-09-25 14:40:48,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fd9ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48, skipping insertion in model container [2020-09-25 14:40:48,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:47" (1/1) ... [2020-09-25 14:40:48,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:48,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:48,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:48,676 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:48,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:48,923 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:48,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48 WrapperNode [2020-09-25 14:40:48,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:48,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:48,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:48,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:48,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:48,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:48,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:48,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:48,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:49,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:49,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... [2020-09-25 14:40:49,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:49,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:49,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:49,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:49,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:49,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:50,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:50,515 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:50,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:50 BoogieIcfgContainer [2020-09-25 14:40:50,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:50,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:50,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:50,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:50,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:47" (1/3) ... [2020-09-25 14:40:50,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c15d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:50, skipping insertion in model container [2020-09-25 14:40:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:48" (2/3) ... [2020-09-25 14:40:50,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c15d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:50, skipping insertion in model container [2020-09-25 14:40:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:50" (3/3) ... [2020-09-25 14:40:50,537 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-09-25 14:40:50,549 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:50,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:50,584 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:50,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:50,621 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:50,621 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:50,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:50,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:50,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:50,622 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:50,622 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 14:40:50,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:50,678 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] [2020-09-25 14:40:50,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:50,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:50,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1349342961, now seen corresponding path program 1 times [2020-09-25 14:40:50,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:50,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693593736] [2020-09-25 14:40:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 14:40:56,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:56,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:40:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:40:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 14:40:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:40:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:56,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:40:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:40:56,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:56,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693593736] [2020-09-25 14:40:56,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:56,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:56,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664311883] [2020-09-25 14:40:56,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:56,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:56,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:56,394 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:58,853 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 14:40:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:58,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-09-25 14:40:58,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:58,898 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 14:40:58,899 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 14:40:58,913 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 14:40:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 14:40:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 14:40:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 14:40:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 14:40:59,081 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 130 [2020-09-25 14:40:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:59,083 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 14:40:59,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 14:40:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 14:40:59,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:59,095 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] [2020-09-25 14:40:59,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:59,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:59,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:59,096 INFO L82 PathProgramCache]: Analyzing trace with hash -240509204, now seen corresponding path program 1 times [2020-09-25 14:40:59,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:59,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209452300] [2020-09-25 14:40:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:59,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:02,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 14:41:04,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:41:04,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:41:04,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:41:04,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:41:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:41:04,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:41:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,419 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 14:41:04,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209452300] [2020-09-25 14:41:04,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:41:04,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633663760] [2020-09-25 14:41:04,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:41:04,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:04,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:41:04,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:04,424 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 6 states. [2020-09-25 14:41:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:06,805 INFO L93 Difference]: Finished difference Result 1902 states and 2495 transitions. [2020-09-25 14:41:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:41:06,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-09-25 14:41:06,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:06,815 INFO L225 Difference]: With dead ends: 1902 [2020-09-25 14:41:06,816 INFO L226 Difference]: Without dead ends: 1309 [2020-09-25 14:41:06,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-09-25 14:41:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1226. [2020-09-25 14:41:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 14:41:06,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1541 transitions. [2020-09-25 14:41:06,908 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1541 transitions. Word has length 164 [2020-09-25 14:41:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:06,910 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1541 transitions. [2020-09-25 14:41:06,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:41:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1541 transitions. [2020-09-25 14:41:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:41:06,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:06,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:06,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:06,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:06,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:06,920 INFO L82 PathProgramCache]: Analyzing trace with hash 887772483, now seen corresponding path program 1 times [2020-09-25 14:41:06,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:06,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922714452] [2020-09-25 14:41:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:41:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:41:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 14:41:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:41:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:12,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:12,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:12,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:12,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:12,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:12,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:12,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:41:13,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 14:41:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:13,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:13,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:13,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:13,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 14:41:13,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:13,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:13,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:13,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:41:13,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 14:41:13,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922714452] [2020-09-25 14:41:13,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:13,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:41:13,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054444168] [2020-09-25 14:41:13,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:41:13,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:41:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:41:13,435 INFO L87 Difference]: Start difference. First operand 1226 states and 1541 transitions. Second operand 14 states. [2020-09-25 14:41:15,800 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-09-25 14:41:16,321 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-09-25 14:41:17,389 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-09-25 14:41:17,992 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 79 [2020-09-25 14:41:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:18,581 INFO L93 Difference]: Finished difference Result 2849 states and 3707 transitions. [2020-09-25 14:41:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:41:18,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 197 [2020-09-25 14:41:18,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:18,598 INFO L225 Difference]: With dead ends: 2849 [2020-09-25 14:41:18,599 INFO L226 Difference]: Without dead ends: 1645 [2020-09-25 14:41:18,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:41:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-09-25 14:41:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1615. [2020-09-25 14:41:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-09-25 14:41:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1991 transitions. [2020-09-25 14:41:18,681 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1991 transitions. Word has length 197 [2020-09-25 14:41:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:18,682 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 1991 transitions. [2020-09-25 14:41:18,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:41:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1991 transitions. [2020-09-25 14:41:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 14:41:18,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:18,691 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, 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] [2020-09-25 14:41:18,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:18,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:18,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1183645810, now seen corresponding path program 1 times [2020-09-25 14:41:18,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:18,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210924415] [2020-09-25 14:41:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 14:41:23,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 14:41:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:41:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:41:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:23,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:23,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:41:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:23,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:24,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:41:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 14:41:24,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:24,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:24,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:41:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:24,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210924415] [2020-09-25 14:41:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:24,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:24,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592992981] [2020-09-25 14:41:24,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:24,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:24,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:24,353 INFO L87 Difference]: Start difference. First operand 1615 states and 1991 transitions. Second operand 7 states. [2020-09-25 14:41:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:26,622 INFO L93 Difference]: Finished difference Result 3738 states and 4721 transitions. [2020-09-25 14:41:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:26,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-09-25 14:41:26,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:26,639 INFO L225 Difference]: With dead ends: 3738 [2020-09-25 14:41:26,639 INFO L226 Difference]: Without dead ends: 2145 [2020-09-25 14:41:26,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 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 14:41:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2020-09-25 14:41:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2104. [2020-09-25 14:41:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2020-09-25 14:41:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2561 transitions. [2020-09-25 14:41:26,722 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2561 transitions. Word has length 207 [2020-09-25 14:41:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:26,723 INFO L479 AbstractCegarLoop]: Abstraction has 2104 states and 2561 transitions. [2020-09-25 14:41:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2561 transitions. [2020-09-25 14:41:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 14:41:26,733 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:26,734 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:26,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:26,734 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1730062439, now seen corresponding path program 1 times [2020-09-25 14:41:26,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:26,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449862053] [2020-09-25 14:41:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 14:41:31,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:41:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:31,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:41:31,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:41:31,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:41:31,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:31,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:41:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:31,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:41:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:31,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:31,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:41:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:31,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:32,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 14:41:32,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 14:41:32,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:32,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 14:41:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:41:32,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449862053] [2020-09-25 14:41:32,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:32,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:41:32,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814445313] [2020-09-25 14:41:32,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:32,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:32,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:32,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:32,216 INFO L87 Difference]: Start difference. First operand 2104 states and 2561 transitions. Second operand 8 states. [2020-09-25 14:41:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:35,419 INFO L93 Difference]: Finished difference Result 6748 states and 8280 transitions. [2020-09-25 14:41:35,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:35,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-09-25 14:41:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:35,421 INFO L225 Difference]: With dead ends: 6748 [2020-09-25 14:41:35,421 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:41:35,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:41:35,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:41:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:41:35,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:41:35,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 224 [2020-09-25 14:41:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:35,438 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:41:35,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:35,438 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:41:35,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:41:35,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:35,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:41:36,306 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 43 [2020-09-25 14:41:36,465 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 40