/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:02,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:02,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:02,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:02,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:02,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:02,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:02,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:02,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:02,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:02,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:02,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:02,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:02,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:02,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:02,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:02,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:02,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:02,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:02,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:02,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:02,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:02,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:02,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:02,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:02,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:02,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:02,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:02,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:02,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:02,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:02,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:02,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:02,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:02,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:02,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:02,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:02,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:02,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:02,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:02,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:02,612 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 12:25:02,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:02,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:02,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:02,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:02,657 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:02,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:02,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:02,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:02,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:02,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:02,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:02,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:02,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:02,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:02,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:02,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:02,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:02,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:02,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:02,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:02,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:02,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:02,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:02,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:02,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:02,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:02,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:02,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:02,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:02,664 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:25:03,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:03,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:03,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:03,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:03,169 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:03,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 12:25:03,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4c1873b/c0d58068eb164297b9918c5bafbaa649/FLAG441274121 [2020-09-25 12:25:03,874 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:03,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 12:25:03,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4c1873b/c0d58068eb164297b9918c5bafbaa649/FLAG441274121 [2020-09-25 12:25:04,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c4c1873b/c0d58068eb164297b9918c5bafbaa649 [2020-09-25 12:25:04,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:04,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:04,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:04,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:04,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:04,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:04" (1/1) ... [2020-09-25 12:25:04,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bbc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:04, skipping insertion in model container [2020-09-25 12:25:04,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:04" (1/1) ... [2020-09-25 12:25:04,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:04,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:04,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:04,801 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:05,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:05,059 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:05,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05 WrapperNode [2020-09-25 12:25:05,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:05,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:05,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:05,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:05,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (1/1) ... [2020-09-25 12:25:05,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:05,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:05,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:05,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:05,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (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 12:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:05,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:05,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:05,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:06,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:06,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:06 BoogieIcfgContainer [2020-09-25 12:25:06,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:06,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:06,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:06,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:06,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:04" (1/3) ... [2020-09-25 12:25:06,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d31136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:06, skipping insertion in model container [2020-09-25 12:25:06,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:05" (2/3) ... [2020-09-25 12:25:06,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d31136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:06, skipping insertion in model container [2020-09-25 12:25:06,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:06" (3/3) ... [2020-09-25 12:25:06,649 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-25 12:25:06,661 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:06,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:06,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:06,738 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:06,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:06,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:06,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:06,739 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:06,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:06,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:06,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:06,774 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 12:25:06,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:06,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:06,797 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:06,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-25 12:25:06,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:06,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152419492] [2020-09-25 12:25:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:10,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:12,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 12:25:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:25:12,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:12,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:12,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:25:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 12:25:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:25:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:12,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 12:25:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:12,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:12,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:12,499 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 12:25:12,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152419492] [2020-09-25 12:25:12,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:12,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:12,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879132451] [2020-09-25 12:25:12,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:12,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:12,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:12,535 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:14,784 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:25:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:14,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 12:25:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:14,822 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:25:14,822 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:25:14,834 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 12:25:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:25:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:25:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:25:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:25:15,006 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 133 [2020-09-25 12:25:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:15,008 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:25:15,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:25:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:25:15,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:15,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:15,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:15,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-25 12:25:15,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:15,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331333317] [2020-09-25 12:25:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:16,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:20,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 12:25:20,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:25:20,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:20,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:20,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:25:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 12:25:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:25:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:20,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:20,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:20,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:20,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:20,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:20,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:25:20,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:20,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:20,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:25:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:20,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331333317] [2020-09-25 12:25:20,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:20,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:20,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911191375] [2020-09-25 12:25:20,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:20,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:20,395 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:25:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:22,492 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 12:25:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:22,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 12:25:22,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:22,504 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 12:25:22,504 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 12:25:22,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 12:25:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 12:25:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 12:25:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1282 transitions. [2020-09-25 12:25:22,546 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1282 transitions. Word has length 151 [2020-09-25 12:25:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:22,547 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1282 transitions. [2020-09-25 12:25:22,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1282 transitions. [2020-09-25 12:25:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:25:22,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:22,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:22,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:22,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1984167013, now seen corresponding path program 1 times [2020-09-25 12:25:22,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:22,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554495103] [2020-09-25 12:25:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:22,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:27,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:27,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 12:25:27,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:25:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:25:27,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:27,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:25:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 12:25:27,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:25:27,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:28,442 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 12:25:28,607 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-25 12:25:28,769 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-09-25 12:25:28,920 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-09-25 12:25:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:29,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:29,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:25:29,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:25:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:25:29,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:25:29,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:25:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:25:29,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:25:29,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554495103] [2020-09-25 12:25:29,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:29,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:25:29,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588878911] [2020-09-25 12:25:29,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:25:29,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:25:29,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:25:29,469 INFO L87 Difference]: Start difference. First operand 1036 states and 1282 transitions. Second operand 13 states. [2020-09-25 12:25:30,405 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-09-25 12:25:31,834 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-25 12:25:32,439 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 12:25:32,807 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-09-25 12:25:33,304 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 12:25:35,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:35,009 INFO L93 Difference]: Finished difference Result 2886 states and 3809 transitions. [2020-09-25 12:25:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 12:25:35,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-09-25 12:25:35,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:35,023 INFO L225 Difference]: With dead ends: 2886 [2020-09-25 12:25:35,023 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 12:25:35,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:25:35,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 12:25:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1584. [2020-09-25 12:25:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-25 12:25:35,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1903 transitions. [2020-09-25 12:25:35,102 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1903 transitions. Word has length 168 [2020-09-25 12:25:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:35,102 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1903 transitions. [2020-09-25 12:25:35,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:25:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1903 transitions. [2020-09-25 12:25:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:25:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:35,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:35,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:35,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:35,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084426, now seen corresponding path program 1 times [2020-09-25 12:25:35,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:35,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160025100] [2020-09-25 12:25:35,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:36,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:25:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:25:40,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:40,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:40,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 12:25:40,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 12:25:40,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:40,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:40,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:40,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:40,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:40,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:40,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:25:40,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:40,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:25:40,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:40,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:40,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:25:40,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:40,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160025100] [2020-09-25 12:25:40,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:40,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:40,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147836960] [2020-09-25 12:25:40,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:40,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:40,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:40,408 INFO L87 Difference]: Start difference. First operand 1584 states and 1903 transitions. Second operand 5 states. [2020-09-25 12:25:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:42,297 INFO L93 Difference]: Finished difference Result 3498 states and 4303 transitions. [2020-09-25 12:25:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:42,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 12:25:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:42,309 INFO L225 Difference]: With dead ends: 3498 [2020-09-25 12:25:42,309 INFO L226 Difference]: Without dead ends: 1936 [2020-09-25 12:25:42,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-09-25 12:25:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1888. [2020-09-25 12:25:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-25 12:25:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2240 transitions. [2020-09-25 12:25:42,381 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2240 transitions. Word has length 168 [2020-09-25 12:25:42,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:42,381 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2240 transitions. [2020-09-25 12:25:42,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2240 transitions. [2020-09-25 12:25:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 12:25:42,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:42,390 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, 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] [2020-09-25 12:25:42,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:42,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:42,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1915300853, now seen corresponding path program 1 times [2020-09-25 12:25:42,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:42,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438985863] [2020-09-25 12:25:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:42,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:47,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 12:25:47,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:25:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:47,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:25:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 12:25:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:25:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:48,020 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-09-25 12:25:48,162 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-09-25 12:25:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:48,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:25:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:25:48,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 12:25:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:48,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:25:48,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 12:25:48,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438985863] [2020-09-25 12:25:48,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:48,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:25:48,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497979718] [2020-09-25 12:25:48,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:25:48,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:25:48,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:25:48,962 INFO L87 Difference]: Start difference. First operand 1888 states and 2240 transitions. Second operand 14 states. [2020-09-25 12:25:49,777 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 12:25:51,291 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-25 12:25:51,947 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 12:25:52,226 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95