/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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:20,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:20,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:20,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:20,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:20,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:20,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:20,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:20,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:20,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:20,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:20,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:20,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:20,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:20,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:20,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:20,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:20,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:20,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:20,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:20,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:20,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:20,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:20,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:20,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:20,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:20,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:20,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:20,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:20,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:20,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:20,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:20,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:20,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:20,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:20,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:20,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:20,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:20,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:20,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:20,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:20,555 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 14:43:20,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:20,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:20,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:20,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:20,603 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:20,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:20,604 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:20,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:20,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:20,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:20,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:20,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:20,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:20,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:20,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:20,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:20,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:20,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:20,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:20,608 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:20,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:20,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:20,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:20,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:20,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:20,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:20,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:20,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:20,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:20,609 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 14:43:21,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:21,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:21,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:21,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:21,109 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:21,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 14:43:21,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118495227/d3f8405c77f842a18e7dc4c1784ed25c/FLAG11292d16c [2020-09-25 14:43:21,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:21,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-09-25 14:43:21,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118495227/d3f8405c77f842a18e7dc4c1784ed25c/FLAG11292d16c [2020-09-25 14:43:22,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/118495227/d3f8405c77f842a18e7dc4c1784ed25c [2020-09-25 14:43:22,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:22,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:22,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:22,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:22,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:22,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:22,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e72776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22, skipping insertion in model container [2020-09-25 14:43:22,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:22,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:22,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:22,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:22,591 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:22,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:22,912 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:22,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22 WrapperNode [2020-09-25 14:43:22,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:22,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:22,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:22,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:22,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:22,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:22,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:22,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:23,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:23,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:23,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (1/1) ... [2020-09-25 14:43:23,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:23,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:23,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:23,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:23,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (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 14:43:23,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:24,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:24,787 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:24,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:24 BoogieIcfgContainer [2020-09-25 14:43:24,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:24,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:24,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:24,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:24,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:22" (1/3) ... [2020-09-25 14:43:24,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a5280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:24, skipping insertion in model container [2020-09-25 14:43:24,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:22" (2/3) ... [2020-09-25 14:43:24,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a5280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:24, skipping insertion in model container [2020-09-25 14:43:24,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:24" (3/3) ... [2020-09-25 14:43:24,817 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-09-25 14:43:24,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:24,842 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:24,865 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:24,906 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:24,907 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:24,907 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:24,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:24,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:24,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:24,908 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:24,908 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 14:43:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 14:43:24,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:24,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:24,959 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:24,965 INFO L82 PathProgramCache]: Analyzing trace with hash -899775614, now seen corresponding path program 1 times [2020-09-25 14:43:24,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:24,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539995998] [2020-09-25 14:43:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:43:25,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:25,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-25 14:43:25,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:25,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 14:43:25,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:25,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:25,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:25,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:25,946 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 14:43:25,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539995998] [2020-09-25 14:43:25,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:25,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:25,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636071985] [2020-09-25 14:43:25,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:25,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:25,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:25,985 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 14:43:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:28,479 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 14:43:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:28,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 14:43:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:28,508 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 14:43:28,509 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 14:43:28,525 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 14:43:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 14:43:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 14:43:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 14:43:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 14:43:28,699 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 73 [2020-09-25 14:43:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:28,701 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 14:43:28,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 14:43:28,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 14:43:28,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:28,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:28,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:28,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1576204144, now seen corresponding path program 1 times [2020-09-25 14:43:28,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:28,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233482951] [2020-09-25 14:43:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:33,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 14:43:33,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 14:43:33,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:33,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:33,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 14:43:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:33,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:33,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:33,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:33,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:33,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:33,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 14:43:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:34,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:34,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233482951] [2020-09-25 14:43:34,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:34,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:34,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987503355] [2020-09-25 14:43:34,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:34,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:34,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:34,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:34,133 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 7 states. [2020-09-25 14:43:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:37,351 INFO L93 Difference]: Finished difference Result 2101 states and 2645 transitions. [2020-09-25 14:43:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:37,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 14:43:37,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:37,364 INFO L225 Difference]: With dead ends: 2101 [2020-09-25 14:43:37,364 INFO L226 Difference]: Without dead ends: 1310 [2020-09-25 14:43:37,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-09-25 14:43:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1192. [2020-09-25 14:43:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-09-25 14:43:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1447 transitions. [2020-09-25 14:43:37,418 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1447 transitions. Word has length 152 [2020-09-25 14:43:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:37,421 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1447 transitions. [2020-09-25 14:43:37,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:37,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1447 transitions. [2020-09-25 14:43:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:43:37,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:37,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:37,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:37,425 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1632172087, now seen corresponding path program 1 times [2020-09-25 14:43:37,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:37,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254789633] [2020-09-25 14:43:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:43:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3848 [2020-09-25 14:43:41,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:41,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:41,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:41,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:41,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:41,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:41,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:41,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:41,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:41,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:41,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:41,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:41,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:43:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 14:43:41,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:41,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:41,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:41,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:43:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:41,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254789633] [2020-09-25 14:43:41,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:41,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:41,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615239995] [2020-09-25 14:43:41,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:41,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:41,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:41,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:41,667 INFO L87 Difference]: Start difference. First operand 1192 states and 1447 transitions. Second operand 7 states. [2020-09-25 14:43:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:44,823 INFO L93 Difference]: Finished difference Result 3164 states and 4039 transitions. [2020-09-25 14:43:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:44,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-09-25 14:43:44,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:44,844 INFO L225 Difference]: With dead ends: 3164 [2020-09-25 14:43:44,844 INFO L226 Difference]: Without dead ends: 1987 [2020-09-25 14:43:44,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2020-09-25 14:43:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1870. [2020-09-25 14:43:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1870 states. [2020-09-25 14:43:44,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2205 transitions. [2020-09-25 14:43:44,940 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2205 transitions. Word has length 155 [2020-09-25 14:43:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:44,945 INFO L479 AbstractCegarLoop]: Abstraction has 1870 states and 2205 transitions. [2020-09-25 14:43:44,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2205 transitions. [2020-09-25 14:43:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 14:43:44,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:44,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:44,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:44,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1211602231, now seen corresponding path program 1 times [2020-09-25 14:43:44,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:44,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166601145] [2020-09-25 14:43:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:46,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 14:43:46,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-09-25 14:43:46,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:46,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:43:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:46,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 14:43:46,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:47,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:47,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:43:47,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:47,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:43:47,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:43:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:47,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:43:47,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 14:43:47,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:47,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:47,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 14:43:47,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:47,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166601145] [2020-09-25 14:43:47,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:47,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:43:47,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340866360] [2020-09-25 14:43:47,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:43:47,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:47,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:43:47,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:47,535 INFO L87 Difference]: Start difference. First operand 1870 states and 2205 transitions. Second operand 10 states. [2020-09-25 14:43:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:51,605 INFO L93 Difference]: Finished difference Result 3355 states and 3991 transitions. [2020-09-25 14:43:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:43:51,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-25 14:43:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:51,614 INFO L225 Difference]: With dead ends: 3355 [2020-09-25 14:43:51,614 INFO L226 Difference]: Without dead ends: 1620 [2020-09-25 14:43:51,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:43:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2020-09-25 14:43:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1600. [2020-09-25 14:43:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-09-25 14:43:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 1873 transitions. [2020-09-25 14:43:51,665 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 1873 transitions. Word has length 166 [2020-09-25 14:43:51,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:51,666 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 1873 transitions. [2020-09-25 14:43:51,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:43:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 1873 transitions. [2020-09-25 14:43:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-25 14:43:51,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:51,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:51,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:51,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1930234139, now seen corresponding path program 1 times [2020-09-25 14:43:51,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:51,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710798291] [2020-09-25 14:43:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:54,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:54,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-09-25 14:43:56,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 14:43:56,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:56,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-09-25 14:43:56,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:56,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:56,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:56,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:43:56,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:56,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:56,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:43:56,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:57,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:43:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 14:43:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:57,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:43:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:57,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 14:43:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:43:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 14:43:57,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:57,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:57,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:57,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710798291] [2020-09-25 14:43:57,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:57,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:43:57,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885930873] [2020-09-25 14:43:57,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:43:57,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:43:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:57,760 INFO L87 Difference]: Start difference. First operand 1600 states and 1873 transitions. Second operand 10 states. [2020-09-25 14:44:01,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:01,283 INFO L93 Difference]: Finished difference Result 3007 states and 3571 transitions. [2020-09-25 14:44:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:44:01,286 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-09-25 14:44:01,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:01,293 INFO L225 Difference]: With dead ends: 3007 [2020-09-25 14:44:01,293 INFO L226 Difference]: Without dead ends: 1611 [2020-09-25 14:44:01,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:44:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-09-25 14:44:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1576. [2020-09-25 14:44:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-09-25 14:44:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1835 transitions. [2020-09-25 14:44:01,333 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1835 transitions. Word has length 274 [2020-09-25 14:44:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:01,334 INFO L479 AbstractCegarLoop]: Abstraction has 1576 states and 1835 transitions. [2020-09-25 14:44:01,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:44:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1835 transitions. [2020-09-25 14:44:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-09-25 14:44:01,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:01,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:44:01,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:44:01,342 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:01,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash 419469507, now seen corresponding path program 1 times [2020-09-25 14:44:01,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:01,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934065910] [2020-09-25 14:44:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:01,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:01,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:06,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 406 [2020-09-25 14:44:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:44:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:44:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:06,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:44:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 339 [2020-09-25 14:44:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:44:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:44:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:06,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:44:06,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:44:06,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:06,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:06,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:44:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:06,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:06,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:44:06,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:44:06,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:06,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 14:44:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:06,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:44:06,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:06,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:44:06,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:06,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:44:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:06,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:44:06,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:06,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-25 14:44:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:06,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:44:06,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:44:06,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:44:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 14:44:06,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:44:06,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:44:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:44:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:44:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:44:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:44:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 178 proven. 3 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-09-25 14:44:06,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934065910] [2020-09-25 14:44:06,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:44:06,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:44:06,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580763341] [2020-09-25 14:44:06,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:44:06,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:44:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:44:06,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:44:06,974 INFO L87 Difference]: Start difference. First operand 1576 states and 1835 transitions. Second operand 5 states. [2020-09-25 14:44:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:44:09,885 INFO L93 Difference]: Finished difference Result 3282 states and 4001 transitions. [2020-09-25 14:44:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:44:09,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-09-25 14:44:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:44:09,895 INFO L225 Difference]: With dead ends: 3282 [2020-09-25 14:44:09,895 INFO L226 Difference]: Without dead ends: 2103 [2020-09-25 14:44:09,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:44:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2020-09-25 14:44:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 1960. [2020-09-25 14:44:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-09-25 14:44:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2307 transitions. [2020-09-25 14:44:09,942 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2307 transitions. Word has length 391 [2020-09-25 14:44:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:44:09,943 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2307 transitions. [2020-09-25 14:44:09,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:44:09,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2307 transitions. [2020-09-25 14:44:09,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-09-25 14:44:09,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:44:09,954 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:09,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:44:09,955 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:44:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:44:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1106921996, now seen corresponding path program 1 times [2020-09-25 14:44:09,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:44:09,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286341761] [2020-09-25 14:44:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:44:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:44:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:44:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking...