/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:29,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:29,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:29,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:29,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:29,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:29,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:29,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:29,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:29,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:29,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:29,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:29,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:29,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:29,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:29,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:29,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:29,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:29,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:29,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:29,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:29,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:29,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:29,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:29,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:29,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:29,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:29,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:29,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:29,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:29,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:29,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:29,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:29,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:29,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:29,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:29,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:29,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:29,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:29,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:29,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:29,932 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 14:41:29,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:29,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:29,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:29,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:29,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:29,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:29,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:29,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:29,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:29,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:29,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:29,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:29,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:29,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:29,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:29,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:29,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:29,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:29,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:29,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:30,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:30,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:30,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:30,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:30,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:30,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:30,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:30,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:30,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:30,002 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 14:41:30,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:30,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:30,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:30,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:30,511 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:30,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 14:41:30,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635215094/207592b2c14f40e9a7d5401ff4f608fe/FLAGb6ba33c73 [2020-09-25 14:41:31,261 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:31,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 14:41:31,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635215094/207592b2c14f40e9a7d5401ff4f608fe/FLAGb6ba33c73 [2020-09-25 14:41:31,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/635215094/207592b2c14f40e9a7d5401ff4f608fe [2020-09-25 14:41:31,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:31,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:31,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:31,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:31,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:31,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:31" (1/1) ... [2020-09-25 14:41:31,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:31, skipping insertion in model container [2020-09-25 14:41:31,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:31" (1/1) ... [2020-09-25 14:41:31,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:31,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:32,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:32,192 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:32,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:32,350 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32 WrapperNode [2020-09-25 14:41:32,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:32,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:32,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:32,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:32,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (1/1) ... [2020-09-25 14:41:32,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:32,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:32,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:32,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:32,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (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 14:41:32,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:32,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:32,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:32,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:32,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:34,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:34,113 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:34,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:34 BoogieIcfgContainer [2020-09-25 14:41:34,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:34,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:34,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:34,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:34,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:31" (1/3) ... [2020-09-25 14:41:34,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:34, skipping insertion in model container [2020-09-25 14:41:34,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:32" (2/3) ... [2020-09-25 14:41:34,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:34, skipping insertion in model container [2020-09-25 14:41:34,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:34" (3/3) ... [2020-09-25 14:41:34,133 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 14:41:34,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:34,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:34,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:34,217 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:34,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:34,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:34,218 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:34,218 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:34,218 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:34,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:34,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 14:41:34,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:34,262 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] [2020-09-25 14:41:34,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:34,269 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 14:41:34,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:34,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-25 14:41:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:35,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 14:41:35,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-09-25 14:41:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:41:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:41:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:35,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:35,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:35,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:41:35,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:35,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:35,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:35,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:35,548 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 14:41:35,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-25 14:41:35,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:35,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:41:35,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876814586] [2020-09-25 14:41:35,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:35,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:35,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:35,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:35,584 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 14:41:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:38,385 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 14:41:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:41:38,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 14:41:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:38,415 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 14:41:38,415 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 14:41:38,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:38,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 14:41:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 14:41:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:41:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 14:41:38,544 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 14:41:38,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:38,545 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 14:41:38,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 14:41:38,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 14:41:38,559 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:38,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:38,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:38,560 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 14:41:38,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:38,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519168286] [2020-09-25 14:41:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 14:41:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:41:43,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:43,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:43,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:41:43,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:43,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:43,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:43,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:41:43,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:43,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:43,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:43,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:41:44,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 14:41:44,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:44,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:44,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:41:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:44,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519168286] [2020-09-25 14:41:44,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:44,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:44,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113726081] [2020-09-25 14:41:44,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:44,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:44,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:44,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:44,440 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 14:41:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:46,502 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 14:41:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:41:46,503 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-25 14:41:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:46,511 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 14:41:46,511 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 14:41:46,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 14:41:46,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 14:41:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 14:41:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 14:41:46,570 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 188 [2020-09-25 14:41:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 14:41:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 14:41:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 14:41:46,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:46,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:46,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:46,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-25 14:41:46,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:46,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460989345] [2020-09-25 14:41:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:46,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:51,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 14:41:51,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:41:51,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:41:51,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:51,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:51,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:41:51,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:51,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:41:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:51,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 14:41:52,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 14:41:52,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:52,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:41:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:52,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460989345] [2020-09-25 14:41:52,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:52,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:52,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349488904] [2020-09-25 14:41:52,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:52,150 INFO L87 Difference]: Start difference. First operand 852 states and 1127 transitions. Second operand 7 states. [2020-09-25 14:41:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:54,394 INFO L93 Difference]: Finished difference Result 2216 states and 3086 transitions. [2020-09-25 14:41:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:54,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 14:41:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:54,406 INFO L225 Difference]: With dead ends: 2216 [2020-09-25 14:41:54,406 INFO L226 Difference]: Without dead ends: 1379 [2020-09-25 14:41:54,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 14:41:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2020-09-25 14:41:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1009. [2020-09-25 14:41:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-09-25 14:41:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1287 transitions. [2020-09-25 14:41:54,467 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1287 transitions. Word has length 195 [2020-09-25 14:41:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:54,472 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1287 transitions. [2020-09-25 14:41:54,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:54,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1287 transitions. [2020-09-25 14:41:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 14:41:54,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:54,480 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:54,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:54,481 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:54,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash -779241874, now seen corresponding path program 1 times [2020-09-25 14:41:54,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:54,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826876612] [2020-09-25 14:41:54,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 14:41:59,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:59,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:41:59,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:41:59,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:41:59,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:59,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:41:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:59,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:59,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:41:59,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:59,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:59,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:59,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:41:59,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:00,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:42:00,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:00,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 14:42:00,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:00,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:00,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:42:00,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:00,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826876612] [2020-09-25 14:42:00,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:00,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:00,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76811343] [2020-09-25 14:42:00,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:00,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:00,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:00,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:00,423 INFO L87 Difference]: Start difference. First operand 1009 states and 1287 transitions. Second operand 7 states. [2020-09-25 14:42:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:02,752 INFO L93 Difference]: Finished difference Result 2218 states and 2979 transitions. [2020-09-25 14:42:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:02,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-09-25 14:42:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:02,761 INFO L225 Difference]: With dead ends: 2218 [2020-09-25 14:42:02,761 INFO L226 Difference]: Without dead ends: 1374 [2020-09-25 14:42:02,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:42:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-09-25 14:42:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1184. [2020-09-25 14:42:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2020-09-25 14:42:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1487 transitions. [2020-09-25 14:42:02,805 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1487 transitions. Word has length 267 [2020-09-25 14:42:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:02,806 INFO L479 AbstractCegarLoop]: Abstraction has 1184 states and 1487 transitions. [2020-09-25 14:42:02,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1487 transitions. [2020-09-25 14:42:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 14:42:02,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:02,813 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:02,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:02,813 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:02,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1408472308, now seen corresponding path program 1 times [2020-09-25 14:42:02,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:02,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834101423] [2020-09-25 14:42:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:02,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-25 14:42:07,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:42:07,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:07,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:07,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 14:42:07,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:42:07,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:07,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:07,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:42:07,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:07,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:07,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:07,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:08,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 14:42:08,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:08,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:08,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:42:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:08,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:42:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:42:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 14:42:08,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:08,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:42:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:08,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834101423] [2020-09-25 14:42:08,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:08,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:08,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642789138] [2020-09-25 14:42:08,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:08,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:08,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:08,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:08,784 INFO L87 Difference]: Start difference. First operand 1184 states and 1487 transitions. Second operand 7 states. [2020-09-25 14:42:11,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:11,096 INFO L93 Difference]: Finished difference Result 2711 states and 3496 transitions. [2020-09-25 14:42:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:11,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-09-25 14:42:11,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:11,104 INFO L225 Difference]: With dead ends: 2711 [2020-09-25 14:42:11,104 INFO L226 Difference]: Without dead ends: 1190 [2020-09-25 14:42:11,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2020-09-25 14:42:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 994. [2020-09-25 14:42:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 994 states. [2020-09-25 14:42:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1180 transitions. [2020-09-25 14:42:11,141 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1180 transitions. Word has length 277 [2020-09-25 14:42:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:11,142 INFO L479 AbstractCegarLoop]: Abstraction has 994 states and 1180 transitions. [2020-09-25 14:42:11,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1180 transitions. [2020-09-25 14:42:11,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 14:42:11,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:11,147 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:42:11,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:11,148 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash -660187066, now seen corresponding path program 1 times [2020-09-25 14:42:11,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:11,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210925796] [2020-09-25 14:42:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-09-25 14:42:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 14:42:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:16,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:16,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:16,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:16,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:16,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking...