/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:24,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:24,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:24,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:24,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:24,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:24,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:24,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:24,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:24,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:24,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:24,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:24,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:24,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:24,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:24,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:24,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:24,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:24,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:24,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:24,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:24,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:24,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:24,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:24,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:24,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:24,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:24,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:24,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:24,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:24,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:24,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:24,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:24,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:24,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:24,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:24,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:24,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:24,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:24,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:24,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:24,296 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 10:13:24,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:24,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:24,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:24,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:24,323 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:24,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:24,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:24,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:24,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:24,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:24,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:24,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:24,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:24,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:24,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:24,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:24,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:24,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:24,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:24,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:24,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:24,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:24,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:24,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:24,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:24,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:24,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:24,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:24,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:24,328 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:13:24,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:24,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:24,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:24,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:24,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:24,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 10:13:24,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5a93d76d/37f706dc055a455287980036ee9227c1/FLAG90a0a6d08 [2020-09-25 10:13:25,589 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:25,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 10:13:25,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5a93d76d/37f706dc055a455287980036ee9227c1/FLAG90a0a6d08 [2020-09-25 10:13:25,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5a93d76d/37f706dc055a455287980036ee9227c1 [2020-09-25 10:13:25,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:25,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:25,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:25,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:25,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:25,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:25" (1/1) ... [2020-09-25 10:13:25,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:25, skipping insertion in model container [2020-09-25 10:13:25,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:25" (1/1) ... [2020-09-25 10:13:25,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:25,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:26,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:26,462 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:26,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:26,740 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:26,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26 WrapperNode [2020-09-25 10:13:26,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:26,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:26,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:26,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:26,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (1/1) ... [2020-09-25 10:13:26,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:26,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:26,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:26,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:26,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (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 10:13:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:27,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:27,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:27,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:27,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:27,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:28,836 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:28,836 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:28,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:28 BoogieIcfgContainer [2020-09-25 10:13:28,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:28,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:28,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:28,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:28,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:25" (1/3) ... [2020-09-25 10:13:28,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:28, skipping insertion in model container [2020-09-25 10:13:28,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:26" (2/3) ... [2020-09-25 10:13:28,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6fd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:28, skipping insertion in model container [2020-09-25 10:13:28,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:28" (3/3) ... [2020-09-25 10:13:28,859 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 10:13:28,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:28,883 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:28,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:28,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:28,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:28,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:28,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:28,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:28,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:28,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:28,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 10:13:29,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:13:29,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:29,011 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] [2020-09-25 10:13:29,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:29,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:29,020 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 10:13:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:29,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615463834] [2020-09-25 10:13:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:13:29,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:13:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-25 10:13:30,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:30,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:13:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:30,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:30,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:30,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:30,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:30,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:13:30,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:30,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:30,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:30,186 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 10:13:30,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615463834] [2020-09-25 10:13:30,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:30,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:13:30,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560755583] [2020-09-25 10:13:30,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:13:30,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:30,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:13:30,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:13:30,224 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 10:13:33,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:33,006 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 10:13:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:13:33,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 10:13:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:33,050 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 10:13:33,051 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:13:33,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:13:33,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 10:13:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 10:13:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 10:13:33,213 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 67 [2020-09-25 10:13:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:33,214 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 10:13:33,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:13:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 10:13:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:13:33,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:33,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:33,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:33,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:33,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:33,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1248724664, now seen corresponding path program 1 times [2020-09-25 10:13:33,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:33,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232535202] [2020-09-25 10:13:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:13:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:13:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 10:13:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:13:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:38,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:38,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:38,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:38,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:38,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 10:13:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:38,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:38,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:38,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:38,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232535202] [2020-09-25 10:13:38,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:38,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:38,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037078040] [2020-09-25 10:13:38,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:38,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:38,995 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 10:13:43,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:43,665 INFO L93 Difference]: Finished difference Result 2578 states and 3308 transitions. [2020-09-25 10:13:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:43,666 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 10:13:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:43,677 INFO L225 Difference]: With dead ends: 2578 [2020-09-25 10:13:43,677 INFO L226 Difference]: Without dead ends: 1787 [2020-09-25 10:13:43,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:43,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-09-25 10:13:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1325. [2020-09-25 10:13:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-09-25 10:13:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1562 transitions. [2020-09-25 10:13:43,740 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1562 transitions. Word has length 146 [2020-09-25 10:13:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:43,742 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1562 transitions. [2020-09-25 10:13:43,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1562 transitions. [2020-09-25 10:13:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 10:13:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:43,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:43,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:43,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 10:13:43,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:43,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584696681] [2020-09-25 10:13:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:47,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 10:13:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4199 [2020-09-25 10:13:47,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:47,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:47,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:47,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:13:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:48,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:48,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:13:48,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:48,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:48,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:48,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:48,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:48,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:48,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:13:48,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 10:13:48,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:48,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:48,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:13:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:48,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584696681] [2020-09-25 10:13:48,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:48,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:48,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820067881] [2020-09-25 10:13:48,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:48,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:48,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:48,333 INFO L87 Difference]: Start difference. First operand 1325 states and 1562 transitions. Second operand 8 states. [2020-09-25 10:13:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:51,864 INFO L93 Difference]: Finished difference Result 3160 states and 3853 transitions. [2020-09-25 10:13:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:51,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 10:13:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:51,877 INFO L225 Difference]: With dead ends: 3160 [2020-09-25 10:13:51,877 INFO L226 Difference]: Without dead ends: 1850 [2020-09-25 10:13:51,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-09-25 10:13:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1800. [2020-09-25 10:13:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-09-25 10:13:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2099 transitions. [2020-09-25 10:13:51,948 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2099 transitions. Word has length 149 [2020-09-25 10:13:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:51,948 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 2099 transitions. [2020-09-25 10:13:51,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2099 transitions. [2020-09-25 10:13:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 10:13:51,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:51,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:51,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:51,954 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:51,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1077856175, now seen corresponding path program 1 times [2020-09-25 10:13:51,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:51,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126138195] [2020-09-25 10:13:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:56,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:56,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 10:13:56,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:13:56,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:56,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:56,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 10:13:56,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:57,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:57,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:13:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:57,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:57,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:57,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 10:13:57,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:57,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:57,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:57,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:57,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:13:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 10:13:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:57,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:57,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126138195] [2020-09-25 10:13:57,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:57,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:57,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148410034] [2020-09-25 10:13:57,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:57,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:57,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:57,752 INFO L87 Difference]: Start difference. First operand 1800 states and 2099 transitions. Second operand 8 states. [2020-09-25 10:14:00,973 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2020-09-25 10:14:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:02,737 INFO L93 Difference]: Finished difference Result 4314 states and 5197 transitions. [2020-09-25 10:14:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:14:02,740 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-25 10:14:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:02,754 INFO L225 Difference]: With dead ends: 4314 [2020-09-25 10:14:02,754 INFO L226 Difference]: Without dead ends: 2529 [2020-09-25 10:14:02,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:14:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2020-09-25 10:14:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 2261. [2020-09-25 10:14:02,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2020-09-25 10:14:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2609 transitions. [2020-09-25 10:14:02,825 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2609 transitions. Word has length 244 [2020-09-25 10:14:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:02,826 INFO L479 AbstractCegarLoop]: Abstraction has 2261 states and 2609 transitions. [2020-09-25 10:14:02,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:14:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2609 transitions. [2020-09-25 10:14:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 10:14:02,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:02,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:14:02,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:14:02,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash -740360978, now seen corresponding path program 1 times [2020-09-25 10:14:02,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:02,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040318012] [2020-09-25 10:14:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:04,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:07,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 10:14:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:14:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 10:14:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 10:14:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 10:14:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:14:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:07,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:07,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:07,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:14:07,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:07,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:14:07,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:07,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:14:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:14:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:14:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:14:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:14:08,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:14:08,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:14:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:14:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:14:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:14:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:08,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:14:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:14:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:14:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 10:14:08,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:14:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:14:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:14:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:14:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:14:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:14:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:14:08,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040318012] [2020-09-25 10:14:08,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:14:08,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:14:08,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676912626] [2020-09-25 10:14:08,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:14:08,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:14:08,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:14:08,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:14:08,688 INFO L87 Difference]: Start difference. First operand 2261 states and 2609 transitions. Second operand 7 states. [2020-09-25 10:14:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:12,509 INFO L93 Difference]: Finished difference Result 4845 states and 5755 transitions. [2020-09-25 10:14:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:14:12,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-25 10:14:12,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:12,519 INFO L225 Difference]: With dead ends: 4845 [2020-09-25 10:14:12,520 INFO L226 Difference]: Without dead ends: 1613 [2020-09-25 10:14:12,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 10:14:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-09-25 10:14:12,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1348. [2020-09-25 10:14:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1348 states. [2020-09-25 10:14:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1452 transitions. [2020-09-25 10:14:12,567 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1452 transitions. Word has length 299 [2020-09-25 10:14:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:12,568 INFO L479 AbstractCegarLoop]: Abstraction has 1348 states and 1452 transitions. [2020-09-25 10:14:12,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:14:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1452 transitions. [2020-09-25 10:14:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-25 10:14:12,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:12,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 10:14:12,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:14:12,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:12,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1472936979, now seen corresponding path program 1 times [2020-09-25 10:14:12,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:12,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861102088] [2020-09-25 10:14:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:12,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking...