/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:23,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:23,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:23,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:23,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:23,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:23,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:23,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:23,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:23,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:23,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:23,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:23,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:23,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:23,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:23,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:23,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:23,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:23,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:23,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:23,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:23,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:23,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:23,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:23,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:23,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:23,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:23,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:23,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:23,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:23,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:23,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:23,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:23,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:23,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:23,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:23,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:23,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:23,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:23,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:23,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:23,332 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 10:09:23,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:23,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:23,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:23,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:23,386 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:23,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:23,387 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:23,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:23,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:23,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:23,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:23,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:23,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:23,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:23,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:23,390 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:23,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:23,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:23,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:23,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:23,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:23,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:23,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:23,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:23,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:23,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:23,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:23,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:23,392 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:23,393 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 10:09:23,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:09:23,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:09:23,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:09:23,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:09:23,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:09:23,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 10:09:23,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71adb629e/32aaa905a9994365bdcbc50356d0b248/FLAG2e3cbd914 [2020-09-25 10:09:24,524 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:09:24,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 10:09:24,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71adb629e/32aaa905a9994365bdcbc50356d0b248/FLAG2e3cbd914 [2020-09-25 10:09:24,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71adb629e/32aaa905a9994365bdcbc50356d0b248 [2020-09-25 10:09:24,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:09:24,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:09:24,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:24,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:09:24,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:09:24,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:24" (1/1) ... [2020-09-25 10:09:24,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:24, skipping insertion in model container [2020-09-25 10:09:24,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:09:24" (1/1) ... [2020-09-25 10:09:24,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:09:24,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:09:25,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:25,335 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:09:25,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:09:25,578 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:09:25,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25 WrapperNode [2020-09-25 10:09:25,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:09:25,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:09:25,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:09:25,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:09:25,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... [2020-09-25 10:09:25,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:09:25,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:09:25,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:09:25,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:09:25,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:09:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:09:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:09:25,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:09:25,781 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:09:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:09:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:09:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:09:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:09:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:09:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:09:27,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:09:27,081 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:09:27,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:27 BoogieIcfgContainer [2020-09-25 10:09:27,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:09:27,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:09:27,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:09:27,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:09:27,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:09:24" (1/3) ... [2020-09-25 10:09:27,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:27, skipping insertion in model container [2020-09-25 10:09:27,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:09:25" (2/3) ... [2020-09-25 10:09:27,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:09:27, skipping insertion in model container [2020-09-25 10:09:27,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:09:27" (3/3) ... [2020-09-25 10:09:27,103 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 10:09:27,115 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:09:27,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:09:27,148 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:09:27,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:09:27,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:09:27,184 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:09:27,184 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:09:27,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:09:27,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:09:27,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:09:27,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:09:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:09:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 10:09:27,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:27,239 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] [2020-09-25 10:09:27,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:27,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 10:09:27,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:27,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 10:09:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:27,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:32,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 10:09:32,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:32,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:09:32,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:32,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:32,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:09:32,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 10:09:32,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:09:32,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:32,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:32,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:09:32,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:32,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:32,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:09:32,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:09:32,819 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 10:09:32,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 10:09:32,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:09:32,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:09:32,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055319351] [2020-09-25 10:09:32,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:09:32,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:32,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:09:32,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:09:32,856 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:09:35,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:35,180 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 10:09:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:09:35,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 10:09:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:35,214 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 10:09:35,215 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 10:09:35,226 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 10:09:35,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 10:09:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 10:09:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 10:09:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 10:09:35,330 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 10:09:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:35,331 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 10:09:35,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:09:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 10:09:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:09:35,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:35,340 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:35,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:09:35,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:35,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 10:09:35,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:35,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383784077] [2020-09-25 10:09:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:37,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:39,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:09:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:09:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:09:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:40,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:09:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:40,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:40,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:40,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:40,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:09:40,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:40,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:40,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:09:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:09:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:40,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:09:40,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:09:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:40,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:40,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:09:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:40,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383784077] [2020-09-25 10:09:40,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:40,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:09:40,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22059588] [2020-09-25 10:09:40,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:09:40,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:40,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:09:40,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:09:40,702 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 10:09:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:42,592 INFO L93 Difference]: Finished difference Result 1612 states and 2074 transitions. [2020-09-25 10:09:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:09:42,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 10:09:42,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:42,600 INFO L225 Difference]: With dead ends: 1612 [2020-09-25 10:09:42,600 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 10:09:42,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 10:09:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2020-09-25 10:09:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 10:09:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1216 transitions. [2020-09-25 10:09:42,649 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1216 transitions. Word has length 146 [2020-09-25 10:09:42,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:42,650 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1216 transitions. [2020-09-25 10:09:42,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:09:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1216 transitions. [2020-09-25 10:09:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 10:09:42,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:42,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:42,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:42,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:42,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 10:09:42,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:42,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41815425] [2020-09-25 10:09:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:47,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 10:09:47,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:47,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:09:47,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:47,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 10:09:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:47,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:09:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:48,276 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-09-25 10:09:48,453 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-09-25 10:09:48,656 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2020-09-25 10:09:48,852 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2020-09-25 10:09:49,047 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 37 [2020-09-25 10:09:49,195 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 33 [2020-09-25 10:09:49,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:49,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:49,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:09:49,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:49,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:49,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:49,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:09:49,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:49,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 10:09:49,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:49,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:49,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:09:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:49,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41815425] [2020-09-25 10:09:49,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:49,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:09:49,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960423457] [2020-09-25 10:09:49,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:09:49,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:49,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:09:49,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:09:49,861 INFO L87 Difference]: Start difference. First operand 965 states and 1216 transitions. Second operand 16 states. [2020-09-25 10:09:53,906 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-25 10:09:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:54,310 INFO L93 Difference]: Finished difference Result 3377 states and 4546 transitions. [2020-09-25 10:09:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:54,311 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2020-09-25 10:09:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:54,329 INFO L225 Difference]: With dead ends: 3377 [2020-09-25 10:09:54,330 INFO L226 Difference]: Without dead ends: 2434 [2020-09-25 10:09:54,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:09:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-09-25 10:09:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2031. [2020-09-25 10:09:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-25 10:09:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2584 transitions. [2020-09-25 10:09:54,420 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2584 transitions. Word has length 172 [2020-09-25 10:09:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:54,421 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2584 transitions. [2020-09-25 10:09:54,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:09:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2584 transitions. [2020-09-25 10:09:54,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 10:09:54,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:54,431 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:54,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:54,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 10:09:54,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:54,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752640256] [2020-09-25 10:09:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:59,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 10:09:59,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 10:09:59,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:59,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 10:09:59,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 10:09:59,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:59,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:59,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:59,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:09:59,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:59,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:59,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:59,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:09:59,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:09:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:59,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:59,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:09:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:59,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:59,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:59,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:59,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 10:09:59,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:59,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:10:00,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752640256] [2020-09-25 10:10:00,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:00,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:10:00,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269648386] [2020-09-25 10:10:00,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:10:00,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:00,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:10:00,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:00,092 INFO L87 Difference]: Start difference. First operand 2031 states and 2584 transitions. Second operand 8 states. [2020-09-25 10:10:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:03,732 INFO L93 Difference]: Finished difference Result 6168 states and 8352 transitions. [2020-09-25 10:10:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:10:03,733 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 10:10:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:03,753 INFO L225 Difference]: With dead ends: 6168 [2020-09-25 10:10:03,753 INFO L226 Difference]: Without dead ends: 3973 [2020-09-25 10:10:03,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2020-09-25 10:10:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3755. [2020-09-25 10:10:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3755 states. [2020-09-25 10:10:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 4688 transitions. [2020-09-25 10:10:03,873 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 4688 transitions. Word has length 184 [2020-09-25 10:10:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:03,874 INFO L479 AbstractCegarLoop]: Abstraction has 3755 states and 4688 transitions. [2020-09-25 10:10:03,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:10:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 4688 transitions. [2020-09-25 10:10:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 10:10:03,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:03,887 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:03,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:03,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:03,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2137284262, now seen corresponding path program 1 times [2020-09-25 10:10:03,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:03,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747285332] [2020-09-25 10:10:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:03,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 10:10:08,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:10:08,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:08,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:08,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 10:10:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 10:10:08,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:09,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:09,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:10:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:09,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:09,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:09,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:10:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:10:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:09,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 10:10:09,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 10:10:09,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:09,327 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:10:09,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747285332] [2020-09-25 10:10:09,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:09,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:09,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782577309] [2020-09-25 10:10:09,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:09,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:09,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:09,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:09,329 INFO L87 Difference]: Start difference. First operand 3755 states and 4688 transitions. Second operand 6 states. [2020-09-25 10:10:11,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:11,004 INFO L93 Difference]: Finished difference Result 6663 states and 8465 transitions. [2020-09-25 10:10:11,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:10:11,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 10:10:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:11,025 INFO L225 Difference]: With dead ends: 6663 [2020-09-25 10:10:11,025 INFO L226 Difference]: Without dead ends: 2770 [2020-09-25 10:10:11,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:10:11,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2020-09-25 10:10:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 2348. [2020-09-25 10:10:11,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2020-09-25 10:10:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 2816 transitions. [2020-09-25 10:10:11,151 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 2816 transitions. Word has length 190 [2020-09-25 10:10:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:11,154 INFO L479 AbstractCegarLoop]: Abstraction has 2348 states and 2816 transitions. [2020-09-25 10:10:11,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 2816 transitions. [2020-09-25 10:10:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 10:10:11,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:11,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:11,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:10:11,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:11,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:11,163 INFO L82 PathProgramCache]: Analyzing trace with hash -852027348, now seen corresponding path program 1 times [2020-09-25 10:10:11,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:11,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632272934] [2020-09-25 10:10:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...