/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=0.3 --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/Problem01_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:25,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:25,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:25,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:25,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:25,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:25,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:25,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:25,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:25,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:25,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:25,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:25,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:25,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:25,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:25,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:25,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:25,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:25,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:25,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:25,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:25,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:25,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:25,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:25,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:25,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:25,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:25,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:25,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:25,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:25,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:25,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:25,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:25,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:25,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:25,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:25,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:25,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:25,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:25,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:25,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:25,687 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 12:21:25,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:25,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:25,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:25,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:25,746 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:25,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:25,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:25,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:25,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:25,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:25,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:25,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:25,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:25,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:25,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:25,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:25,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:25,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:25,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:25,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:25,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:25,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:25,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:25,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:25,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:25,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:25,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:25,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:25,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:25,753 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:21:26,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:26,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:26,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:26,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:26,257 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:26,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 12:21:26,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfba947aa/c139d2ef08264776ab16f3f1ee3d8f99/FLAGa73485b64 [2020-09-25 12:21:27,015 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:27,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2020-09-25 12:21:27,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfba947aa/c139d2ef08264776ab16f3f1ee3d8f99/FLAGa73485b64 [2020-09-25 12:21:27,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dfba947aa/c139d2ef08264776ab16f3f1ee3d8f99 [2020-09-25 12:21:27,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:27,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:27,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:27,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:27,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:27,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:27" (1/1) ... [2020-09-25 12:21:27,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:27, skipping insertion in model container [2020-09-25 12:21:27,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:27" (1/1) ... [2020-09-25 12:21:27,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:27,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:27,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:27,843 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:28,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:28,104 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:28,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28 WrapperNode [2020-09-25 12:21:28,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:28,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:28,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:28,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:28,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (1/1) ... [2020-09-25 12:21:28,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:28,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:28,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:28,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:28,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (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 12:21:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:30,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:30,164 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:30,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:30 BoogieIcfgContainer [2020-09-25 12:21:30,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:30,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:30,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:30,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:30,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:27" (1/3) ... [2020-09-25 12:21:30,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:30, skipping insertion in model container [2020-09-25 12:21:30,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:28" (2/3) ... [2020-09-25 12:21:30,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:30, skipping insertion in model container [2020-09-25 12:21:30,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:30" (3/3) ... [2020-09-25 12:21:30,185 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2020-09-25 12:21:30,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:30,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:30,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:30,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:30,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:30,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:30,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:30,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:30,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:30,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:30,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 12:21:30,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:30,334 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, 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 12:21:30,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1844135333, now seen corresponding path program 1 times [2020-09-25 12:21:30,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:30,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-25 12:21:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:21:35,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:21:35,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:21:35,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 12:21:35,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:21:35,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:21:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:35,985 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 12:21:35,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-25 12:21:35,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:35,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:35,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344697071] [2020-09-25 12:21:35,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:35,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:36,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:36,018 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:36,227 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-09-25 12:21:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:38,410 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 12:21:38,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:38,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-09-25 12:21:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:38,452 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 12:21:38,452 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 12:21:38,462 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 12:21:38,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 12:21:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 12:21:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:38,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:21:38,567 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 155 [2020-09-25 12:21:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:38,568 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:21:38,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:21:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 12:21:38,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:38,582 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:38,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:38,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash 623276724, now seen corresponding path program 1 times [2020-09-25 12:21:38,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:38,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707365054] [2020-09-25 12:21:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 12:21:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:21:43,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:43,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:43,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:43,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:21:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:44,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:44,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:44,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:44,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:44,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:44,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:44,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 12:21:44,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:44,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:44,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:44,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:44,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707365054] [2020-09-25 12:21:44,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:44,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:21:44,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116814668] [2020-09-25 12:21:44,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:21:44,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:21:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:21:44,574 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 12:21:45,426 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-25 12:21:45,552 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 12:21:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:49,743 INFO L93 Difference]: Finished difference Result 1904 states and 2495 transitions. [2020-09-25 12:21:49,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:21:49,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-09-25 12:21:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:49,751 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 12:21:49,752 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 12:21:49,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 12:21:49,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 860. [2020-09-25 12:21:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-09-25 12:21:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 981 transitions. [2020-09-25 12:21:49,827 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 981 transitions. Word has length 176 [2020-09-25 12:21:49,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:49,828 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 981 transitions. [2020-09-25 12:21:49,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:21:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 981 transitions. [2020-09-25 12:21:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:21:49,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:49,833 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:49,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:49,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash -616595395, now seen corresponding path program 1 times [2020-09-25 12:21:49,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:49,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698389520] [2020-09-25 12:21:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:21:54,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:21:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:21:54,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:54,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:54,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 12:21:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-25 12:21:54,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:55,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:55,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:21:55,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:21:55,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:21:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:55,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698389520] [2020-09-25 12:21:55,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:55,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:55,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100873572] [2020-09-25 12:21:55,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:55,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:55,195 INFO L87 Difference]: Start difference. First operand 860 states and 981 transitions. Second operand 5 states. [2020-09-25 12:21:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:57,663 INFO L93 Difference]: Finished difference Result 2081 states and 2452 transitions. [2020-09-25 12:21:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:57,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 12:21:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:57,675 INFO L225 Difference]: With dead ends: 2081 [2020-09-25 12:21:57,675 INFO L226 Difference]: Without dead ends: 1245 [2020-09-25 12:21:57,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2020-09-25 12:21:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1146. [2020-09-25 12:21:57,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-09-25 12:21:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1339 transitions. [2020-09-25 12:21:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1339 transitions. Word has length 180 [2020-09-25 12:21:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:57,728 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1339 transitions. [2020-09-25 12:21:57,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1339 transitions. [2020-09-25 12:21:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:21:57,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:57,736 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 12:21:57,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:57,736 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:57,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:57,737 INFO L82 PathProgramCache]: Analyzing trace with hash -825311748, now seen corresponding path program 1 times [2020-09-25 12:21:57,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:57,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273171390] [2020-09-25 12:21:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:57,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:22:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 12:22:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:22:02,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:02,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:22:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 12:22:02,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:02,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:02,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:02,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:22:02,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:02,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:02,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:22:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:22:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:03,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:03,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273171390] [2020-09-25 12:22:03,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:03,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:03,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622363373] [2020-09-25 12:22:03,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:03,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:03,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:03,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:03,099 INFO L87 Difference]: Start difference. First operand 1146 states and 1339 transitions. Second operand 5 states. [2020-09-25 12:22:05,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:05,311 INFO L93 Difference]: Finished difference Result 3078 states and 3719 transitions. [2020-09-25 12:22:05,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:05,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 12:22:05,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:05,324 INFO L225 Difference]: With dead ends: 3078 [2020-09-25 12:22:05,324 INFO L226 Difference]: Without dead ends: 1799 [2020-09-25 12:22:05,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2020-09-25 12:22:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1704. [2020-09-25 12:22:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-09-25 12:22:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2032 transitions. [2020-09-25 12:22:05,419 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2032 transitions. Word has length 185 [2020-09-25 12:22:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:05,420 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2032 transitions. [2020-09-25 12:22:05,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2032 transitions. [2020-09-25 12:22:05,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 12:22:05,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:05,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:05,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:05,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:05,451 INFO L82 PathProgramCache]: Analyzing trace with hash -102992294, now seen corresponding path program 1 times [2020-09-25 12:22:05,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:05,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178897594] [2020-09-25 12:22:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:05,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 12:22:10,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:10,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 12:22:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:22:10,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:22:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:10,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178897594] [2020-09-25 12:22:10,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:10,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:22:10,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708873828] [2020-09-25 12:22:10,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:22:10,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:10,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:22:10,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:10,850 INFO L87 Difference]: Start difference. First operand 1704 states and 2032 transitions. Second operand 6 states. [2020-09-25 12:22:12,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:12,937 INFO L93 Difference]: Finished difference Result 4053 states and 4957 transitions. [2020-09-25 12:22:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:12,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2020-09-25 12:22:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:12,951 INFO L225 Difference]: With dead ends: 4053 [2020-09-25 12:22:12,952 INFO L226 Difference]: Without dead ends: 2373 [2020-09-25 12:22:12,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-09-25 12:22:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2276. [2020-09-25 12:22:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-09-25 12:22:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2814 transitions. [2020-09-25 12:22:13,028 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2814 transitions. Word has length 202 [2020-09-25 12:22:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:13,028 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 2814 transitions. [2020-09-25 12:22:13,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:22:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2814 transitions. [2020-09-25 12:22:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 12:22:13,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:13,040 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:13,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:13,040 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:13,041 INFO L82 PathProgramCache]: Analyzing trace with hash 522410003, now seen corresponding path program 1 times [2020-09-25 12:22:13,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:13,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113743012] [2020-09-25 12:22:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking...