/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:41,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:41,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:41,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:41,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:41,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:41,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:41,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:41,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:41,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:41,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:41,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:41,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:41,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:41,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:41,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:41,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:41,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:41,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:41,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:41,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:41,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:41,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:41,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:41,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:41,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:41,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:41,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:41,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:41,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:41,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:41,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:41,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:41,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:41,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:41,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:41,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:41,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:41,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:41,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:41,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:41,833 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 10:11:41,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:41,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:41,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:41,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:41,863 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:41,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:41,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:41,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:41,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:41,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:41,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:41,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:41,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:41,865 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:41,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:41,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:41,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:41,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:41,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:41,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:41,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:41,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:41,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:41,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:41,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:41,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:41,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:41,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:41,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:41,869 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 10:11:42,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:42,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:42,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:42,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:42,420 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:42,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 10:11:42,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd220dff5/d7940d36fbed42a2b6ec8b3fc66d1923/FLAGaf7415ea2 [2020-09-25 10:11:43,173 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:43,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 10:11:43,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd220dff5/d7940d36fbed42a2b6ec8b3fc66d1923/FLAGaf7415ea2 [2020-09-25 10:11:43,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd220dff5/d7940d36fbed42a2b6ec8b3fc66d1923 [2020-09-25 10:11:43,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:43,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:43,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:43,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:43,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:43,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:43" (1/1) ... [2020-09-25 10:11:43,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:43, skipping insertion in model container [2020-09-25 10:11:43,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:43" (1/1) ... [2020-09-25 10:11:43,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:43,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:44,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:44,171 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:44,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:44,334 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:44,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44 WrapperNode [2020-09-25 10:11:44,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:44,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:44,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:44,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:44,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (1/1) ... [2020-09-25 10:11:44,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:44,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:44,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:44,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:44,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (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 10:11:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:46,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:46,083 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:46,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:46 BoogieIcfgContainer [2020-09-25 10:11:46,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:46,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:46,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:46,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:46,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:43" (1/3) ... [2020-09-25 10:11:46,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:46, skipping insertion in model container [2020-09-25 10:11:46,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:44" (2/3) ... [2020-09-25 10:11:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:46, skipping insertion in model container [2020-09-25 10:11:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:46" (3/3) ... [2020-09-25 10:11:46,104 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 10:11:46,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:46,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:46,153 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:46,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:46,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:46,188 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:46,188 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:46,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:46,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:46,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:46,189 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 10:11:46,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:46,233 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] [2020-09-25 10:11:46,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:46,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 10:11:46,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:46,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 10:11:46,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:11:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-25 10:11:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:11:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:11:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:47,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:47,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:47,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:11:47,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:47,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:47,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:47,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:47,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:47,443 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 10:11:47,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 10:11:47,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:47,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980853646] [2020-09-25 10:11:47,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:47,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:47,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:47,477 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:49,804 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 10:11:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:49,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 10:11:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:49,854 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 10:11:49,855 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 10:11:49,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 10:11:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 10:11:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 10:11:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 10:11:50,044 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 10:11:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:50,045 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 10:11:50,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 10:11:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 10:11:50,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:50,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:50,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:50,054 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:50,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 10:11:50,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:50,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116512060] [2020-09-25 10:11:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:55,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:11:55,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:11:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:55,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:55,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:11:55,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:55,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 10:11:55,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:55,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:55,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:11:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:55,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:11:55,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 10:11:55,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:55,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:55,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:55,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116512060] [2020-09-25 10:11:55,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:55,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:55,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655000390] [2020-09-25 10:11:55,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:55,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:55,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:55,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:55,778 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 10:11:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:58,747 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 10:11:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:58,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2020-09-25 10:11:58,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:58,756 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 10:11:58,756 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 10:11:58,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 10:11:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 10:11:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 10:11:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 10:11:58,799 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 129 [2020-09-25 10:11:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:58,802 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 10:11:58,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 10:11:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 10:11:58,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:58,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:58,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:58,816 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:58,817 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 10:11:58,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:58,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629817582] [2020-09-25 10:11:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:00,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:00,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:12:00,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:12:00,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-09-25 10:12:00,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:00,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:12:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 10:12:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:01,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:01,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:12:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:12:01,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:01,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 10:12:01,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:01,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:12:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 10:12:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:12:01,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629817582] [2020-09-25 10:12:01,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:01,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:12:01,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062994959] [2020-09-25 10:12:01,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:12:01,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:01,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:12:01,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:12:01,341 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 6 states. [2020-09-25 10:12:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:03,148 INFO L93 Difference]: Finished difference Result 1865 states and 2319 transitions. [2020-09-25 10:12:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:12:03,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-09-25 10:12:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:03,156 INFO L225 Difference]: With dead ends: 1865 [2020-09-25 10:12:03,157 INFO L226 Difference]: Without dead ends: 1175 [2020-09-25 10:12:03,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:12:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-09-25 10:12:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1015. [2020-09-25 10:12:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-09-25 10:12:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1259 transitions. [2020-09-25 10:12:03,196 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1259 transitions. Word has length 129 [2020-09-25 10:12:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:03,197 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1259 transitions. [2020-09-25 10:12:03,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:12:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1259 transitions. [2020-09-25 10:12:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 10:12:03,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:03,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:03,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:12:03,200 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:03,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:03,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 10:12:03,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:03,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492234664] [2020-09-25 10:12:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 10:12:08,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:12:08,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4798 [2020-09-25 10:12:08,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:12:08,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:08,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:12:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:12:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:12:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:08,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:12:08,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:12:08,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:08,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492234664] [2020-09-25 10:12:08,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:08,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:12:08,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588037504] [2020-09-25 10:12:08,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:12:08,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:08,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:12:08,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:12:08,392 INFO L87 Difference]: Start difference. First operand 1015 states and 1259 transitions. Second operand 8 states. [2020-09-25 10:12:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:11,730 INFO L93 Difference]: Finished difference Result 2665 states and 3477 transitions. [2020-09-25 10:12:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:11,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 10:12:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:11,746 INFO L225 Difference]: With dead ends: 2665 [2020-09-25 10:12:11,746 INFO L226 Difference]: Without dead ends: 1665 [2020-09-25 10:12:11,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-09-25 10:12:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1536. [2020-09-25 10:12:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1536 states. [2020-09-25 10:12:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1889 transitions. [2020-09-25 10:12:11,828 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1889 transitions. Word has length 135 [2020-09-25 10:12:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:11,830 INFO L479 AbstractCegarLoop]: Abstraction has 1536 states and 1889 transitions. [2020-09-25 10:12:11,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:12:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1889 transitions. [2020-09-25 10:12:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:12:11,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:11,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:11,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:12:11,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1743030617, now seen corresponding path program 1 times [2020-09-25 10:12:11,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:11,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481000223] [2020-09-25 10:12:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:16,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:12:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:12:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-09-25 10:12:16,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:16,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:12:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:16,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:16,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:16,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:16,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:12:16,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:16,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:16,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:16,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:16,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:16,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:16,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:16,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 10:12:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:12:16,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481000223] [2020-09-25 10:12:16,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:16,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:12:16,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433145932] [2020-09-25 10:12:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:12:16,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:12:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:12:16,867 INFO L87 Difference]: Start difference. First operand 1536 states and 1889 transitions. Second operand 10 states. [2020-09-25 10:12:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:19,956 INFO L93 Difference]: Finished difference Result 3981 states and 5038 transitions. [2020-09-25 10:12:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:19,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-09-25 10:12:19,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:19,969 INFO L225 Difference]: With dead ends: 3981 [2020-09-25 10:12:19,969 INFO L226 Difference]: Without dead ends: 2620 [2020-09-25 10:12:19,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:12:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-09-25 10:12:20,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2448. [2020-09-25 10:12:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2448 states. [2020-09-25 10:12:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 2975 transitions. [2020-09-25 10:12:20,039 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 2975 transitions. Word has length 168 [2020-09-25 10:12:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:20,040 INFO L479 AbstractCegarLoop]: Abstraction has 2448 states and 2975 transitions. [2020-09-25 10:12:20,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:12:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 2975 transitions. [2020-09-25 10:12:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 10:12:20,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:20,046 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:20,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:20,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:20,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:20,047 INFO L82 PathProgramCache]: Analyzing trace with hash 808739585, now seen corresponding path program 1 times [2020-09-25 10:12:20,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:20,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114277127] [2020-09-25 10:12:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-25 10:12:25,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 10:12:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:12:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:12:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-09-25 10:12:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:25,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:12:25,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:12:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:12:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:12:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:12:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 10:12:25,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:12:25,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:12:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:25,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:25,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:12:25,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:25,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-25 10:12:25,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:25,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:12:25,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:25,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:12:25,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:12:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-09-25 10:12:25,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114277127] [2020-09-25 10:12:26,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:12:26,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:12:26,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197834201] [2020-09-25 10:12:26,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:12:26,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:26,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:12:26,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:12:26,003 INFO L87 Difference]: Start difference. First operand 2448 states and 2975 transitions. Second operand 9 states. [2020-09-25 10:12:29,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:29,791 INFO L93 Difference]: Finished difference Result 5197 states and 6607 transitions. [2020-09-25 10:12:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:12:29,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-09-25 10:12:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:29,803 INFO L225 Difference]: With dead ends: 5197 [2020-09-25 10:12:29,804 INFO L226 Difference]: Without dead ends: 3554 [2020-09-25 10:12:29,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:12:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2020-09-25 10:12:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3515. [2020-09-25 10:12:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3515 states. [2020-09-25 10:12:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 4262 transitions. [2020-09-25 10:12:29,891 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 4262 transitions. Word has length 221 [2020-09-25 10:12:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:29,891 INFO L479 AbstractCegarLoop]: Abstraction has 3515 states and 4262 transitions. [2020-09-25 10:12:29,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:12:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 4262 transitions. [2020-09-25 10:12:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 10:12:29,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:29,898 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:29,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:12:29,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:29,900 INFO L82 PathProgramCache]: Analyzing trace with hash -928646965, now seen corresponding path program 1 times [2020-09-25 10:12:29,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:29,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979958158] [2020-09-25 10:12:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking...