/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/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:05,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:05,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:05,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:05,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:05,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:05,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:05,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:05,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:05,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:05,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:05,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:05,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:05,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:05,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:05,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:05,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:05,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:05,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:05,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:05,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:05,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:05,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:05,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:05,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:05,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:05,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:05,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:05,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:05,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:05,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:05,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:05,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:05,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:05,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:05,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:05,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:05,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:05,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:05,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:05,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:05,955 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 10:08:06,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:06,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:06,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:06,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:06,011 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:06,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:06,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:06,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:06,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:06,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:06,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:06,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:06,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:06,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:06,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:06,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:06,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:06,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:06,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:06,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:06,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:06,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:06,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:06,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:06,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:06,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:06,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:06,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:06,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:06,017 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 10:08:06,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:06,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:06,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:06,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:06,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:06,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 10:08:06,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d365aa2/276224d6aed04608831c65b6f74e645c/FLAGf4c9c1527 [2020-09-25 10:08:07,261 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:07,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-09-25 10:08:07,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d365aa2/276224d6aed04608831c65b6f74e645c/FLAGf4c9c1527 [2020-09-25 10:08:07,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2d365aa2/276224d6aed04608831c65b6f74e645c [2020-09-25 10:08:07,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:07,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:07,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:07,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:07,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:07,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:07" (1/1) ... [2020-09-25 10:08:07,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a61b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:07, skipping insertion in model container [2020-09-25 10:08:07,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:07" (1/1) ... [2020-09-25 10:08:07,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:07,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:08,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:08,176 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:08,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:08,383 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:08,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08 WrapperNode [2020-09-25 10:08:08,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:08,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:08,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:08,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:08,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (1/1) ... [2020-09-25 10:08:08,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:08,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:08,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:08,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:08,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (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 10:08:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:08,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:08,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:08,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:08,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:09,998 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:09,999 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:10,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:10 BoogieIcfgContainer [2020-09-25 10:08:10,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:10,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:10,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:10,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:10,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:07" (1/3) ... [2020-09-25 10:08:10,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30749da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:10, skipping insertion in model container [2020-09-25 10:08:10,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:08" (2/3) ... [2020-09-25 10:08:10,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30749da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:10, skipping insertion in model container [2020-09-25 10:08:10,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:10" (3/3) ... [2020-09-25 10:08:10,029 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-09-25 10:08:10,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:10,056 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:10,079 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:10,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:10,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:10,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:10,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:10,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:10,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:10,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:10,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:10,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 10:08:10,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:10,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:10,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:10,183 INFO L82 PathProgramCache]: Analyzing trace with hash -361381607, now seen corresponding path program 1 times [2020-09-25 10:08:10,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:10,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127983001] [2020-09-25 10:08:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:10,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:11,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:13,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:15,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 10:08:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:08:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:08:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:15,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:15,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 10:08:15,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:15,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:15,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:15,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:08:15,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:15,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:15,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:15,841 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 10:08:15,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127983001] [2020-09-25 10:08:15,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:15,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:15,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977382130] [2020-09-25 10:08:15,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:15,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:15,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:15,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:15,877 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:18,148 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:08:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:18,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 10:08:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:18,195 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:08:18,195 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:08:18,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:08:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:08:18,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:08:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:08:18,326 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 132 [2020-09-25 10:08:18,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:18,327 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:08:18,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:08:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 10:08:18,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:18,337 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:18,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:18,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash 799045204, now seen corresponding path program 1 times [2020-09-25 10:08:18,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:18,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024029226] [2020-09-25 10:08:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:18,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:21,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:22,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 10:08:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:08:23,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:23,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:08:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:23,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:08:23,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:23,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:23,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:08:23,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:23,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 10:08:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:08:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:08:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:24,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024029226] [2020-09-25 10:08:24,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:24,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:08:24,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701775862] [2020-09-25 10:08:24,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:08:24,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:24,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:08:24,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:08:24,151 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 12 states. [2020-09-25 10:08:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:27,082 INFO L93 Difference]: Finished difference Result 1381 states and 1829 transitions. [2020-09-25 10:08:27,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:08:27,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-09-25 10:08:27,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:27,087 INFO L225 Difference]: With dead ends: 1381 [2020-09-25 10:08:27,088 INFO L226 Difference]: Without dead ends: 689 [2020-09-25 10:08:27,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:08:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-09-25 10:08:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 521. [2020-09-25 10:08:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-25 10:08:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 585 transitions. [2020-09-25 10:08:27,122 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 585 transitions. Word has length 166 [2020-09-25 10:08:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:27,123 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 585 transitions. [2020-09-25 10:08:27,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:08:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 585 transitions. [2020-09-25 10:08:27,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 10:08:27,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:27,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:27,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:27,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:27,130 INFO L82 PathProgramCache]: Analyzing trace with hash 533564513, now seen corresponding path program 1 times [2020-09-25 10:08:27,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:27,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25222349] [2020-09-25 10:08:27,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:30,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 10:08:32,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:32,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:08:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:08:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:32,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:32,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:08:32,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:32,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:08:32,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 10:08:32,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:32,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:32,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:08:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:32,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25222349] [2020-09-25 10:08:32,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:32,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:08:32,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834202287] [2020-09-25 10:08:32,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:08:32,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:32,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:08:32,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:08:32,959 INFO L87 Difference]: Start difference. First operand 521 states and 585 transitions. Second operand 11 states. [2020-09-25 10:08:35,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:35,428 INFO L93 Difference]: Finished difference Result 939 states and 1010 transitions. [2020-09-25 10:08:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:08:35,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-09-25 10:08:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:35,434 INFO L225 Difference]: With dead ends: 939 [2020-09-25 10:08:35,435 INFO L226 Difference]: Without dead ends: 514 [2020-09-25 10:08:35,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:08:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-09-25 10:08:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2020-09-25 10:08:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-25 10:08:35,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 560 transitions. [2020-09-25 10:08:35,472 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 560 transitions. Word has length 170 [2020-09-25 10:08:35,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:35,472 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 560 transitions. [2020-09-25 10:08:35,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:08:35,473 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 560 transitions. [2020-09-25 10:08:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 10:08:35,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:35,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:35,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:35,480 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:35,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash -187077519, now seen corresponding path program 1 times [2020-09-25 10:08:35,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:35,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839169995] [2020-09-25 10:08:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:40,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 10:08:40,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:40,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-25 10:08:40,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:40,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:40,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:40,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:40,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:08:40,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:40,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:40,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:41,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:41,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 10:08:41,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:41,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-09-25 10:08:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:41,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:08:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:08:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:41,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839169995] [2020-09-25 10:08:41,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:41,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:08:41,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261619456] [2020-09-25 10:08:41,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:08:41,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:41,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:08:41,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:08:41,420 INFO L87 Difference]: Start difference. First operand 500 states and 560 transitions. Second operand 11 states. [2020-09-25 10:08:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:45,294 INFO L93 Difference]: Finished difference Result 1562 states and 1867 transitions. [2020-09-25 10:08:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:08:45,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-09-25 10:08:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:45,300 INFO L225 Difference]: With dead ends: 1562 [2020-09-25 10:08:45,301 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 10:08:45,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:08:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 10:08:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 804. [2020-09-25 10:08:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-09-25 10:08:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 878 transitions. [2020-09-25 10:08:45,331 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 878 transitions. Word has length 193 [2020-09-25 10:08:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:45,331 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 878 transitions. [2020-09-25 10:08:45,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:08:45,332 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 878 transitions. [2020-09-25 10:08:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 10:08:45,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:45,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:08:45,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:08:45,337 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash 401070577, now seen corresponding path program 1 times [2020-09-25 10:08:45,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:45,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321371206] [2020-09-25 10:08:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:50,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 10:08:50,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-09-25 10:08:50,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:50,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:50,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:50,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:08:50,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:50,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:50,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:50,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:50,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:08:50,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:50,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:08:50,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:50,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:50,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:08:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:08:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:08:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:50,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:51,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:51,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:08:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:08:51,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321371206] [2020-09-25 10:08:51,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:51,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:08:51,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405155934] [2020-09-25 10:08:51,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:08:51,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:51,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:08:51,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:08:51,591 INFO L87 Difference]: Start difference. First operand 804 states and 878 transitions. Second operand 14 states. [2020-09-25 10:08:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:57,677 INFO L93 Difference]: Finished difference Result 3259 states and 3825 transitions. [2020-09-25 10:08:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 10:08:57,678 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 230 [2020-09-25 10:08:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:57,696 INFO L225 Difference]: With dead ends: 3259 [2020-09-25 10:08:57,696 INFO L226 Difference]: Without dead ends: 2115 [2020-09-25 10:08:57,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 10:08:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-09-25 10:08:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1812. [2020-09-25 10:08:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2020-09-25 10:08:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2017 transitions. [2020-09-25 10:08:57,795 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2017 transitions. Word has length 230 [2020-09-25 10:08:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:57,795 INFO L479 AbstractCegarLoop]: Abstraction has 1812 states and 2017 transitions. [2020-09-25 10:08:57,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:08:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2017 transitions. [2020-09-25 10:08:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 10:08:57,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:57,810 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:08:57,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:08:57,811 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1080372332, now seen corresponding path program 1 times [2020-09-25 10:08:57,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:57,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132403686] [2020-09-25 10:08:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:57,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking...