/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=0.5 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:42,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:42,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:42,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:42,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:42,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:42,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:42,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:42,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:42,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:42,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:42,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:42,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:42,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:42,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:42,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:42,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:42,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:42,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:42,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:42,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:42,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:42,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:42,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:42,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:42,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:42,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:42,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:42,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:42,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:42,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:42,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:42,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:42,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:42,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:42,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:42,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:42,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:42,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:42,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:42,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:42,739 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 14:42:42,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:42,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:42,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:42,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:42,789 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:42,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:42,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:42,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:42,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:42,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:42,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:42,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:42,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:42,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:42,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:42,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:42,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:42,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:42,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:42,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:42,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:42,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:42,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:42,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:42,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:42,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:42,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:42,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:42,795 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:43,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:43,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:43,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:43,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:43,261 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:43,262 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 14:42:43,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6bfdb4a5/e396b2c5ed814208b12f02a5ca144d14/FLAGa8e30e189 [2020-09-25 14:42:44,006 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:44,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 14:42:44,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6bfdb4a5/e396b2c5ed814208b12f02a5ca144d14/FLAGa8e30e189 [2020-09-25 14:42:44,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6bfdb4a5/e396b2c5ed814208b12f02a5ca144d14 [2020-09-25 14:42:44,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:44,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:44,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:44,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:44,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:44,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:44" (1/1) ... [2020-09-25 14:42:44,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:44, skipping insertion in model container [2020-09-25 14:42:44,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:44" (1/1) ... [2020-09-25 14:42:44,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:44,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:44,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:44,910 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:45,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:45,212 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:45,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45 WrapperNode [2020-09-25 14:42:45,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:45,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:45,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:45,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:45,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (1/1) ... [2020-09-25 14:42:45,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:45,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:45,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:45,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:45,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (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 14:42:45,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:45,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:46,800 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:46,800 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:46,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:46 BoogieIcfgContainer [2020-09-25 14:42:46,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:46,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:46,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:46,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:46,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:44" (1/3) ... [2020-09-25 14:42:46,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:46, skipping insertion in model container [2020-09-25 14:42:46,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:45" (2/3) ... [2020-09-25 14:42:46,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:46, skipping insertion in model container [2020-09-25 14:42:46,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:46" (3/3) ... [2020-09-25 14:42:46,820 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 14:42:46,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:46,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:46,874 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:46,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:46,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:46,915 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:46,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:46,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:46,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:46,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:46,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:42:46,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:46,964 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] [2020-09-25 14:42:46,964 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:46,973 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 14:42:46,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:46,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 14:42:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:47,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:47,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:48,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 14:42:48,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 830 [2020-09-25 14:42:48,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:48,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 14:42:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:48,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:48,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:48,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 14:42:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:48,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:48,210 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 14:42:48,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 14:42:48,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:48,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:48,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065901940] [2020-09-25 14:42:48,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:48,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:48,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:48,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:48,249 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:50,322 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:42:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:50,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 14:42:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:50,349 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:42:50,349 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:42:50,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:42:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:42:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:42:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:42:50,455 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 54 [2020-09-25 14:42:50,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:50,456 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:42:50,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:42:50,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:42:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:50,464 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:50,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:50,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 14:42:50,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:50,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484232721] [2020-09-25 14:42:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:42:55,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4827 [2020-09-25 14:42:55,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:55,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:42:55,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:55,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:55,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:42:55,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:55,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:55,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:55,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:55,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:55,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 14:42:55,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:55,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:55,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:55,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:42:55,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484232721] [2020-09-25 14:42:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:55,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:42:55,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059650835] [2020-09-25 14:42:55,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:42:55,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:42:55,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:55,882 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 14:42:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:58,099 INFO L93 Difference]: Finished difference Result 1165 states and 1486 transitions. [2020-09-25 14:42:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:42:58,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 14:42:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:58,112 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 14:42:58,113 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 14:42:58,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 14:42:58,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 14:42:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 14:42:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1112 transitions. [2020-09-25 14:42:58,202 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1112 transitions. Word has length 133 [2020-09-25 14:42:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:58,205 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1112 transitions. [2020-09-25 14:42:58,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:42:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1112 transitions. [2020-09-25 14:42:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 14:42:58,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:58,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:58,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:58,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:58,219 INFO L82 PathProgramCache]: Analyzing trace with hash -412359152, now seen corresponding path program 1 times [2020-09-25 14:42:58,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:58,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450163143] [2020-09-25 14:42:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:03,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 14:43:03,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:43:03,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:03,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:03,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:43:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:03,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:03,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:03,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:03,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:03,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:03,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:03,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:03,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:03,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:03,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 14:43:03,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:03,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:03,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450163143] [2020-09-25 14:43:03,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:03,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:03,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027719262] [2020-09-25 14:43:03,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:03,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:03,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:03,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:03,763 INFO L87 Difference]: Start difference. First operand 851 states and 1112 transitions. Second operand 7 states. [2020-09-25 14:43:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:05,647 INFO L93 Difference]: Finished difference Result 1861 states and 2427 transitions. [2020-09-25 14:43:05,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:43:05,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 14:43:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:05,659 INFO L225 Difference]: With dead ends: 1861 [2020-09-25 14:43:05,659 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 14:43:05,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 14:43:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1011. [2020-09-25 14:43:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-09-25 14:43:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1299 transitions. [2020-09-25 14:43:05,708 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1299 transitions. Word has length 137 [2020-09-25 14:43:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:05,714 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1299 transitions. [2020-09-25 14:43:05,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1299 transitions. [2020-09-25 14:43:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 14:43:05,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:05,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:05,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:05,718 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash -109496539, now seen corresponding path program 1 times [2020-09-25 14:43:05,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:05,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277210838] [2020-09-25 14:43:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 14:43:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-09-25 14:43:08,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 14:43:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:08,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:08,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:08,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:08,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:08,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 14:43:08,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:08,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:08,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:08,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277210838] [2020-09-25 14:43:08,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:08,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:08,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430562908] [2020-09-25 14:43:08,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:08,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:08,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:08,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:08,848 INFO L87 Difference]: Start difference. First operand 1011 states and 1299 transitions. Second operand 8 states. [2020-09-25 14:43:12,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,528 INFO L93 Difference]: Finished difference Result 3090 states and 4259 transitions. [2020-09-25 14:43:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:12,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-09-25 14:43:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,545 INFO L225 Difference]: With dead ends: 3090 [2020-09-25 14:43:12,545 INFO L226 Difference]: Without dead ends: 2244 [2020-09-25 14:43:12,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:43:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2244 states. [2020-09-25 14:43:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2244 to 1835. [2020-09-25 14:43:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-09-25 14:43:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2419 transitions. [2020-09-25 14:43:12,640 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2419 transitions. Word has length 143 [2020-09-25 14:43:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,641 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2419 transitions. [2020-09-25 14:43:12,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2419 transitions. [2020-09-25 14:43:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 14:43:12,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,647 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:43:12,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:12,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2021439648, now seen corresponding path program 1 times [2020-09-25 14:43:12,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881541448] [2020-09-25 14:43:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 14:43:17,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:17,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 14:43:17,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:43:17,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:43:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:17,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:17,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:43:17,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:18,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:18,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:18,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:43:18,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:18,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:18,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 14:43:18,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:43:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:18,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881541448] [2020-09-25 14:43:18,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:18,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:18,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101529775] [2020-09-25 14:43:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:18,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:18,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:18,770 INFO L87 Difference]: Start difference. First operand 1835 states and 2419 transitions. Second operand 8 states. [2020-09-25 14:43:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:22,844 INFO L93 Difference]: Finished difference Result 4324 states and 5966 transitions. [2020-09-25 14:43:22,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:22,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-25 14:43:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:22,863 INFO L225 Difference]: With dead ends: 4324 [2020-09-25 14:43:22,863 INFO L226 Difference]: Without dead ends: 2635 [2020-09-25 14:43:22,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-09-25 14:43:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2298. [2020-09-25 14:43:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-09-25 14:43:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2977 transitions. [2020-09-25 14:43:22,953 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2977 transitions. Word has length 216 [2020-09-25 14:43:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:22,953 INFO L479 AbstractCegarLoop]: Abstraction has 2298 states and 2977 transitions. [2020-09-25 14:43:22,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2977 transitions. [2020-09-25 14:43:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 14:43:22,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:22,960 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:22,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:22,960 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 14:43:22,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:22,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428928553] [2020-09-25 14:43:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:27,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 14:43:28,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:43:28,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:43:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:28,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 14:43:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 14:43:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:28,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428928553] [2020-09-25 14:43:28,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:28,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:43:28,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506130093] [2020-09-25 14:43:28,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:43:28,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:28,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:43:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:28,788 INFO L87 Difference]: Start difference. First operand 2298 states and 2977 transitions. Second operand 10 states.