/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:10,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:10,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:10,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:10,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:10,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:10,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:10,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:10,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:10,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:10,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:10,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:10,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:10,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:10,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:10,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:10,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:10,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:10,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:10,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:10,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:10,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:10,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:10,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:10,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:10,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:10,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:10,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:10,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:10,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:10,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:10,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:10,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:10,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:10,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:10,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:10,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:10,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:10,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:10,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:10,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:10,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:11:10,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:10,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:10,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:10,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:10,230 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:10,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:10,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:10,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:10,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:10,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:10,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:10,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:10,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:10,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:10,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:10,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:10,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:10,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:10,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:10,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:10,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:10,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:10,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:10,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:10,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:10,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:10,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:10,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:10,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:10,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:10,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:10,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:10,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:10,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:10,743 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:10,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 10:11:10,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81395a526/48d2922f293a4e8bbb845029353fa5af/FLAGb2f887388 [2020-09-25 10:11:11,474 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:11,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 10:11:11,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81395a526/48d2922f293a4e8bbb845029353fa5af/FLAGb2f887388 [2020-09-25 10:11:11,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81395a526/48d2922f293a4e8bbb845029353fa5af [2020-09-25 10:11:11,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:11,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:11,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:11,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:11,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:11,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:11" (1/1) ... [2020-09-25 10:11:11,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:11, skipping insertion in model container [2020-09-25 10:11:11,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:11" (1/1) ... [2020-09-25 10:11:11,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:11,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:12,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:12,277 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:12,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:12,528 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:12,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12 WrapperNode [2020-09-25 10:11:12,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:12,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:12,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:12,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:12,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... [2020-09-25 10:11:12,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:12,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:12,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:12,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:12,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:14,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:14,302 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:14,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:14 BoogieIcfgContainer [2020-09-25 10:11:14,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:14,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:14,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:14,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:14,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:11" (1/3) ... [2020-09-25 10:11:14,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:14, skipping insertion in model container [2020-09-25 10:11:14,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:12" (2/3) ... [2020-09-25 10:11:14,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:14, skipping insertion in model container [2020-09-25 10:11:14,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:14" (3/3) ... [2020-09-25 10:11:14,359 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 10:11:14,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:14,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:14,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:14,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:14,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:14,479 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:14,479 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:14,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:14,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:14,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:14,480 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:11:14,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:14,538 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] [2020-09-25 10:11:14,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:14,547 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 10:11:14,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:14,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 10:11:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 10:11:15,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-25 10:11:15,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 10:11:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:11:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:15,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:11:15,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:15,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:15,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 10:11:15,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:15,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:11:15,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643550808] [2020-09-25 10:11:15,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:11:15,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:16,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:11:16,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:16,014 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 10:11:18,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:18,577 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 10:11:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:11:18,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 10:11:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:18,607 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 10:11:18,608 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 10:11:18,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:11:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 10:11:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 10:11:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 10:11:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 10:11:18,735 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 64 [2020-09-25 10:11:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:18,735 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 10:11:18,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:11:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 10:11:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 10:11:18,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:18,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:18,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:18,755 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:18,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash -685131667, now seen corresponding path program 1 times [2020-09-25 10:11:18,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:18,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646466769] [2020-09-25 10:11:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:18,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:23,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:23,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 10:11:23,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:11:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 10:11:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:23,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:23,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:23,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 10:11:23,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:11:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:11:24,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:24,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:24,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:24,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:24,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:24,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:24,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:24,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 10:11:24,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:24,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:24,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:24,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:24,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646466769] [2020-09-25 10:11:24,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:24,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:24,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963628017] [2020-09-25 10:11:24,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:24,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:24,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:24,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:24,400 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 10:11:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:27,586 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 10:11:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:27,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 10:11:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:27,610 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 10:11:27,610 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 10:11:27,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:11:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 10:11:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1363. [2020-09-25 10:11:27,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 10:11:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1798 transitions. [2020-09-25 10:11:27,733 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1798 transitions. Word has length 153 [2020-09-25 10:11:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:27,737 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1798 transitions. [2020-09-25 10:11:27,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1798 transitions. [2020-09-25 10:11:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:11:27,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:27,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:27,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:27,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash -188026709, now seen corresponding path program 1 times [2020-09-25 10:11:27,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:27,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487823660] [2020-09-25 10:11:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:32,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:11:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:32,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 10:11:32,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:32,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:32,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:11:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:32,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:11:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:11:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 10:11:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:33,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:33,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487823660] [2020-09-25 10:11:33,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:33,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:33,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744612955] [2020-09-25 10:11:33,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:33,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:33,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:33,558 INFO L87 Difference]: Start difference. First operand 1363 states and 1798 transitions. Second operand 10 states. [2020-09-25 10:11:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:36,675 INFO L93 Difference]: Finished difference Result 3541 states and 4862 transitions. [2020-09-25 10:11:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:36,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-25 10:11:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:36,690 INFO L225 Difference]: With dead ends: 3541 [2020-09-25 10:11:36,690 INFO L226 Difference]: Without dead ends: 2167 [2020-09-25 10:11:36,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2020-09-25 10:11:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1971. [2020-09-25 10:11:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-09-25 10:11:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2543 transitions. [2020-09-25 10:11:36,777 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2543 transitions. Word has length 156 [2020-09-25 10:11:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:36,778 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2543 transitions. [2020-09-25 10:11:36,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2543 transitions. [2020-09-25 10:11:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 10:11:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:36,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:36,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:36,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:36,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:36,786 INFO L82 PathProgramCache]: Analyzing trace with hash 858722410, now seen corresponding path program 1 times [2020-09-25 10:11:36,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:36,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430812649] [2020-09-25 10:11:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 10:11:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:11:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 10:11:41,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:41,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 10:11:41,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:42,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:42,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:42,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:11:42,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:42,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:42,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:42,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:11:42,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 10:11:42,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:42,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:11:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:42,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430812649] [2020-09-25 10:11:42,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:42,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:42,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205438244] [2020-09-25 10:11:42,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:42,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:42,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:42,571 INFO L87 Difference]: Start difference. First operand 1971 states and 2543 transitions. Second operand 11 states. [2020-09-25 10:11:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:45,189 INFO L93 Difference]: Finished difference Result 4613 states and 6104 transitions. [2020-09-25 10:11:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:45,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2020-09-25 10:11:45,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:45,209 INFO L225 Difference]: With dead ends: 4613 [2020-09-25 10:11:45,209 INFO L226 Difference]: Without dead ends: 2731 [2020-09-25 10:11:45,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:45,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2020-09-25 10:11:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2415. [2020-09-25 10:11:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2415 states. [2020-09-25 10:11:45,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3033 transitions. [2020-09-25 10:11:45,305 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3033 transitions. Word has length 210 [2020-09-25 10:11:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:45,306 INFO L479 AbstractCegarLoop]: Abstraction has 2415 states and 3033 transitions. [2020-09-25 10:11:45,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3033 transitions. [2020-09-25 10:11:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 10:11:45,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:45,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:45,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:45,316 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:45,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1847506999, now seen corresponding path program 1 times [2020-09-25 10:11:45,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:45,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514363288] [2020-09-25 10:11:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 10:11:50,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:11:50,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 10:11:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:50,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:50,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:50,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:50,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 10:11:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 10:11:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:11:50,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:50,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 10:11:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:50,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 10:11:50,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:50,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:50,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 99 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:11:51,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514363288] [2020-09-25 10:11:51,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:51,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:51,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647518085] [2020-09-25 10:11:51,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:51,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:51,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:51,142 INFO L87 Difference]: Start difference. First operand 2415 states and 3033 transitions. Second operand 10 states. [2020-09-25 10:11:55,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:55,093 INFO L93 Difference]: Finished difference Result 5196 states and 6804 transitions. [2020-09-25 10:11:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:11:55,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 244 [2020-09-25 10:11:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:55,121 INFO L225 Difference]: With dead ends: 5196 [2020-09-25 10:11:55,121 INFO L226 Difference]: Without dead ends: 2946 [2020-09-25 10:11:55,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:11:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-09-25 10:11:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2828. [2020-09-25 10:11:55,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2020-09-25 10:11:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 3568 transitions. [2020-09-25 10:11:55,227 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 3568 transitions. Word has length 244 [2020-09-25 10:11:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:55,228 INFO L479 AbstractCegarLoop]: Abstraction has 2828 states and 3568 transitions. [2020-09-25 10:11:55,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 3568 transitions. [2020-09-25 10:11:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 10:11:55,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:55,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:55,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:55,240 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash 733432236, now seen corresponding path program 1 times [2020-09-25 10:11:55,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:55,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062442703] [2020-09-25 10:11:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:56,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking...