/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/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:23,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:23,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:23,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:23,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:23,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:23,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:23,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:23,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:23,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:23,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:23,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:23,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:23,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:23,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:23,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:23,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:23,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:23,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:23,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:23,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:23,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:23,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:23,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:23,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:23,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:23,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:23,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:23,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:23,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:23,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:23,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:23,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:23,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:23,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:23,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:23,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:23,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:23,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:23,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:23,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:23,372 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 14:42:23,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:23,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:23,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:23,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:23,421 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:23,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:23,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:23,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:23,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:23,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:23,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:23,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:23,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:23,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:23,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:23,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:23,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:23,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:23,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:23,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:23,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:23,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:23,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:23,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:23,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:23,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:23,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:23,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:23,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:23,427 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 14:42:23,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:23,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:23,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:23,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:23,928 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:23,929 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 14:42:24,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1587bdd7d/be70dd7c1ce64652a08021c89a8fef55/FLAGd6bd5255c [2020-09-25 14:42:24,663 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:24,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 14:42:24,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1587bdd7d/be70dd7c1ce64652a08021c89a8fef55/FLAGd6bd5255c [2020-09-25 14:42:24,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1587bdd7d/be70dd7c1ce64652a08021c89a8fef55 [2020-09-25 14:42:24,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:24,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:24,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:24,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:24,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:24,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:24" (1/1) ... [2020-09-25 14:42:24,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187f794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:24, skipping insertion in model container [2020-09-25 14:42:24,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:24" (1/1) ... [2020-09-25 14:42:24,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:25,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:25,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:25,635 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:25,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:25,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:25,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25 WrapperNode [2020-09-25 14:42:25,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:25,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:25,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:25,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:25,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... [2020-09-25 14:42:25,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:25,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:25,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:25,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:25,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:25,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:25,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:25,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:25,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:25,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:27,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:27,497 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:27,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:27 BoogieIcfgContainer [2020-09-25 14:42:27,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:27,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:27,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:27,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:27,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:24" (1/3) ... [2020-09-25 14:42:27,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:27, skipping insertion in model container [2020-09-25 14:42:27,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:25" (2/3) ... [2020-09-25 14:42:27,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d318c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:27, skipping insertion in model container [2020-09-25 14:42:27,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:27" (3/3) ... [2020-09-25 14:42:27,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 14:42:27,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:27,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:27,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:27,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:27,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:27,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:27,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:27,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:27,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:27,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:27,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:27,681 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 14:42:27,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:27,698 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] [2020-09-25 14:42:27,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 14:42:27,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:27,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676288411] [2020-09-25 14:42:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 14:42:28,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-09-25 14:42:28,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:28,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 14:42:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:42:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:29,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:29,127 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 14:42:29,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676288411] [2020-09-25 14:42:29,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:29,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:29,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795224770] [2020-09-25 14:42:29,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:29,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:29,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:29,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:29,174 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:31,424 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:42:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:31,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 14:42:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:31,452 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:42:31,452 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:42:31,463 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 14:42:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:42:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:42:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:42:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:42:31,561 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 14:42:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:31,562 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:42:31,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:42:31,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:42:31,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:31,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:31,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:31,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:31,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 14:42:31,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:31,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506299473] [2020-09-25 14:42:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:32,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:36,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:42:36,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4509 [2020-09-25 14:42:36,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:36,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:36,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:42:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:36,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:36,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:36,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:36,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:36,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:36,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:36,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:36,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:36,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:36,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 14:42:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:42:36,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506299473] [2020-09-25 14:42:36,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:36,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:36,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019549777] [2020-09-25 14:42:36,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:36,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:36,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:36,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:36,517 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 14:42:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:38,220 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 14:42:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:42:38,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 14:42:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:38,230 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 14:42:38,231 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 14:42:38,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 14:42:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 14:42:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 14:42:38,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 14:42:38,307 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 137 [2020-09-25 14:42:38,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:38,308 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 14:42:38,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 14:42:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:42:38,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:38,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:38,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:38,314 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:38,314 INFO L82 PathProgramCache]: Analyzing trace with hash -921428875, now seen corresponding path program 1 times [2020-09-25 14:42:38,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:38,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195146972] [2020-09-25 14:42:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:38,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:40,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 14:42:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:43,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:42:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:43,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 14:42:43,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:43,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:42:43,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:43,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 14:42:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:43,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195146972] [2020-09-25 14:42:43,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:43,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:43,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802085418] [2020-09-25 14:42:43,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:43,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:43,792 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 14:42:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:47,167 INFO L93 Difference]: Finished difference Result 2420 states and 2994 transitions. [2020-09-25 14:42:47,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:47,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 14:42:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:47,189 INFO L225 Difference]: With dead ends: 2420 [2020-09-25 14:42:47,190 INFO L226 Difference]: Without dead ends: 1586 [2020-09-25 14:42:47,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:42:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-25 14:42:47,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1497. [2020-09-25 14:42:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-09-25 14:42:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1758 transitions. [2020-09-25 14:42:47,285 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1758 transitions. Word has length 147 [2020-09-25 14:42:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:47,287 INFO L479 AbstractCegarLoop]: Abstraction has 1497 states and 1758 transitions. [2020-09-25 14:42:47,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1758 transitions. [2020-09-25 14:42:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 14:42:47,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:47,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:42:47,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:47,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash -352912224, now seen corresponding path program 1 times [2020-09-25 14:42:47,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:47,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065475502] [2020-09-25 14:42:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:47,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 14:42:52,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:42:52,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:42:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:42:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:52,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:52,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:42:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:42:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 14:42:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:52,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 111 proven. 38 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:42:52,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065475502] [2020-09-25 14:42:52,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:52,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:52,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612513390] [2020-09-25 14:42:52,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:52,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:52,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:52,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:52,794 INFO L87 Difference]: Start difference. First operand 1497 states and 1758 transitions. Second operand 7 states. [2020-09-25 14:42:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:55,215 INFO L93 Difference]: Finished difference Result 2707 states and 3331 transitions. [2020-09-25 14:42:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:55,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 14:42:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:55,233 INFO L225 Difference]: With dead ends: 2707 [2020-09-25 14:42:55,233 INFO L226 Difference]: Without dead ends: 1863 [2020-09-25 14:42:55,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-09-25 14:42:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1675. [2020-09-25 14:42:55,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-09-25 14:42:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1968 transitions. [2020-09-25 14:42:55,320 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1968 transitions. Word has length 217 [2020-09-25 14:42:55,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:55,321 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 1968 transitions. [2020-09-25 14:42:55,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1968 transitions. [2020-09-25 14:42:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 14:42:55,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:55,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:42:55,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:55,332 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:55,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1691089535, now seen corresponding path program 1 times [2020-09-25 14:42:55,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:55,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811378575] [2020-09-25 14:42:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:00,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 14:43:00,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:43:00,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:43:00,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:00,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:43:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:43:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:00,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:00,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:00,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:00,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:00,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:00,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:00,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:00,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:43:00,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:00,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:00,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:43:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:43:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-09-25 14:43:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:01,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:01,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:01,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:43:01,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 14:43:01,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811378575] [2020-09-25 14:43:01,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:01,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:01,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925840037] [2020-09-25 14:43:01,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:01,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:01,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:01,478 INFO L87 Difference]: Start difference. First operand 1675 states and 1968 transitions. Second operand 8 states. [2020-09-25 14:43:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:05,598 INFO L93 Difference]: Finished difference Result 3528 states and 4398 transitions. [2020-09-25 14:43:05,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:05,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-09-25 14:43:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:05,611 INFO L225 Difference]: With dead ends: 3528 [2020-09-25 14:43:05,611 INFO L226 Difference]: Without dead ends: 2482 [2020-09-25 14:43:05,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-09-25 14:43:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2445. [2020-09-25 14:43:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2445 states. [2020-09-25 14:43:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 2888 transitions. [2020-09-25 14:43:05,698 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 2888 transitions. Word has length 239 [2020-09-25 14:43:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:05,699 INFO L479 AbstractCegarLoop]: Abstraction has 2445 states and 2888 transitions. [2020-09-25 14:43:05,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 2888 transitions. [2020-09-25 14:43:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 14:43:05,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:05,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 14:43:05,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:05,708 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:05,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1657481291, now seen corresponding path program 1 times [2020-09-25 14:43:05,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:05,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233852497] [2020-09-25 14:43:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking...