/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:00,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:00,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:00,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:00,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:00,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:00,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:00,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:00,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:00,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:00,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:00,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:00,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:00,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:00,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:00,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:00,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:00,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:00,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:00,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:00,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:00,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:00,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:00,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:00,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:00,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:00,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:00,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:00,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:00,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:00,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:00,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:00,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:00,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:00,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:00,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:00,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:00,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:00,206 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 06:44:00,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:00,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:00,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:00,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:00,235 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:00,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:00,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:00,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:00,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:00,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:00,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:00,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:00,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:00,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:00,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:00,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:00,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:00,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:00,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:00,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:00,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:00,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:00,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:00,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:00,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:00,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:00,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:00,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:00,240 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:44:00,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:00,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:00,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:00,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:00,732 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:00,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 06:44:00,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed7f490fe/cb83aa6a6086438cb41f95966cd317b8/FLAG71f9f0e07 [2020-09-25 06:44:01,395 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:01,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 06:44:01,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed7f490fe/cb83aa6a6086438cb41f95966cd317b8/FLAG71f9f0e07 [2020-09-25 06:44:01,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed7f490fe/cb83aa6a6086438cb41f95966cd317b8 [2020-09-25 06:44:01,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:01,651 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:01,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:01,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:01,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:01,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:01" (1/1) ... [2020-09-25 06:44:01,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e5ec8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:01, skipping insertion in model container [2020-09-25 06:44:01,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:01" (1/1) ... [2020-09-25 06:44:01,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:01,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:02,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:02,279 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:02,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:02,519 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:02,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02 WrapperNode [2020-09-25 06:44:02,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:02,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:02,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:02,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:02,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (1/1) ... [2020-09-25 06:44:02,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:02,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:02,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:02,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:02,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (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 06:44:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:02,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:04,027 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:04,028 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:04,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:04 BoogieIcfgContainer [2020-09-25 06:44:04,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:04,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:04,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:04,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:04,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:01" (1/3) ... [2020-09-25 06:44:04,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb3fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:04, skipping insertion in model container [2020-09-25 06:44:04,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:02" (2/3) ... [2020-09-25 06:44:04,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcb3fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:04, skipping insertion in model container [2020-09-25 06:44:04,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:04" (3/3) ... [2020-09-25 06:44:04,048 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-25 06:44:04,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:04,073 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:04,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:04,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:04,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:04,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:04,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:04,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:04,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:04,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:04,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:44:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:04,194 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, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:04,194 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-25 06:44:04,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:04,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264322358] [2020-09-25 06:44:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:04,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:09,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 06:44:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:44:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:44:09,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:09,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:09,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:44:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 06:44:09,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:44:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:09,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:09,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:09,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:44:09,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:09,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:44:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:09,789 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 06:44:09,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264322358] [2020-09-25 06:44:09,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:09,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:44:09,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500480721] [2020-09-25 06:44:09,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:09,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:09,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:09,818 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 06:44:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:12,734 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 06:44:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:44:12,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 06:44:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:12,775 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 06:44:12,775 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 06:44:12,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:12,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 06:44:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 06:44:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 06:44:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 06:44:12,939 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 161 [2020-09-25 06:44:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:12,943 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 06:44:12,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 06:44:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:44:12,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:12,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:12,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:12,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash -880282106, now seen corresponding path program 1 times [2020-09-25 06:44:12,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:12,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837750557] [2020-09-25 06:44:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:13,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:13,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:15,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:44:18,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:44:18,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 06:44:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:18,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:18,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:18,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:18,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:18,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:18,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:18,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:18,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:18,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837750557] [2020-09-25 06:44:18,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:18,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:18,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402237203] [2020-09-25 06:44:18,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:18,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:18,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:18,254 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 06:44:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:20,046 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 06:44:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:20,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 06:44:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:20,055 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 06:44:20,056 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 06:44:20,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 06:44:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 06:44:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 06:44:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 06:44:20,100 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 179 [2020-09-25 06:44:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 06:44:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 06:44:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 06:44:20,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:20,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:20,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:20,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:20,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-25 06:44:20,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:20,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706318932] [2020-09-25 06:44:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 06:44:25,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:44:25,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:44:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:44:25,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 06:44:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:44:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:25,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:25,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:44:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:25,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:25,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:44:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 06:44:25,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:25,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:44:25,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:44:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:25,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706318932] [2020-09-25 06:44:25,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:25,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:44:25,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508789130] [2020-09-25 06:44:25,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:44:25,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:25,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:44:25,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:25,971 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 12 states. [2020-09-25 06:44:29,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:29,451 INFO L93 Difference]: Finished difference Result 3810 states and 5056 transitions. [2020-09-25 06:44:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:44:29,452 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 195 [2020-09-25 06:44:29,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:29,463 INFO L225 Difference]: With dead ends: 3810 [2020-09-25 06:44:29,463 INFO L226 Difference]: Without dead ends: 1432 [2020-09-25 06:44:29,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:44:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-09-25 06:44:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1419. [2020-09-25 06:44:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2020-09-25 06:44:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1740 transitions. [2020-09-25 06:44:29,518 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1740 transitions. Word has length 195 [2020-09-25 06:44:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:29,520 INFO L479 AbstractCegarLoop]: Abstraction has 1419 states and 1740 transitions. [2020-09-25 06:44:29,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:44:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1740 transitions. [2020-09-25 06:44:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 06:44:29,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:29,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:29,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:29,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:29,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:29,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1228146501, now seen corresponding path program 1 times [2020-09-25 06:44:29,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:29,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493254148] [2020-09-25 06:44:29,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:33,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 06:44:34,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:44:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:44:34,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:44:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:44:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:44:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:34,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:34,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:34,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:34,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:34,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:34,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:34,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:35,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:35,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:35,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:35,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:44:35,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:35,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:44:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:35,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493254148] [2020-09-25 06:44:35,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:35,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:44:35,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229896042] [2020-09-25 06:44:35,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:44:35,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:35,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:44:35,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:44:35,221 INFO L87 Difference]: Start difference. First operand 1419 states and 1740 transitions. Second operand 8 states. [2020-09-25 06:44:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:38,979 INFO L93 Difference]: Finished difference Result 3940 states and 5052 transitions. [2020-09-25 06:44:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:44:38,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 06:44:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:38,992 INFO L225 Difference]: With dead ends: 3940 [2020-09-25 06:44:38,992 INFO L226 Difference]: Without dead ends: 2434 [2020-09-25 06:44:38,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2020-09-25 06:44:39,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2378. [2020-09-25 06:44:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2378 states. [2020-09-25 06:44:39,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 2879 transitions. [2020-09-25 06:44:39,083 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 2879 transitions. Word has length 199 [2020-09-25 06:44:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:39,084 INFO L479 AbstractCegarLoop]: Abstraction has 2378 states and 2879 transitions. [2020-09-25 06:44:39,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:44:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 2879 transitions. [2020-09-25 06:44:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 06:44:39,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:39,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:39,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:39,094 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:39,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:39,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1714662301, now seen corresponding path program 1 times [2020-09-25 06:44:39,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:39,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789038487] [2020-09-25 06:44:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 06:44:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:44:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 06:44:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:44,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:44,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:44,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:44:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:44,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:44,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:44:44,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:44,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:44,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:44:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:44:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:44:44,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:44:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 06:44:44,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789038487] [2020-09-25 06:44:44,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:44,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:44,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788227265] [2020-09-25 06:44:44,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:44,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:44,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:44,406 INFO L87 Difference]: Start difference. First operand 2378 states and 2879 transitions. Second operand 5 states. [2020-09-25 06:44:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:45,812 INFO L93 Difference]: Finished difference Result 2400 states and 2914 transitions. [2020-09-25 06:44:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:45,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-09-25 06:44:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:45,825 INFO L225 Difference]: With dead ends: 2400 [2020-09-25 06:44:45,826 INFO L226 Difference]: Without dead ends: 2398 [2020-09-25 06:44:45,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 06:44:45,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2020-09-25 06:44:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2378. [2020-09-25 06:44:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2378 states. [2020-09-25 06:44:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2378 states to 2378 states and 2878 transitions. [2020-09-25 06:44:45,890 INFO L78 Accepts]: Start accepts. Automaton has 2378 states and 2878 transitions. Word has length 223 [2020-09-25 06:44:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 2378 states and 2878 transitions. [2020-09-25 06:44:45,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2378 states and 2878 transitions. [2020-09-25 06:44:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 06:44:45,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:45,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:44:45,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:45,904 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:45,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2144981535, now seen corresponding path program 1 times [2020-09-25 06:44:45,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:45,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966138136] [2020-09-25 06:44:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking...