/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/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:08,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:08,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:08,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:08,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:08,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:08,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:08,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:08,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:08,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:08,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:08,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:08,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:08,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:08,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:08,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:08,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:08,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:08,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:08,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:08,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:08,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:08,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:08,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:08,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:08,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:08,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:08,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:08,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:08,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:08,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:08,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:08,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:08,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:08,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:08,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:08,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:08,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:08,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:08,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:08,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:08,541 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 12:21:08,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:08,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:08,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:08,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:08,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:08,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:08,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:08,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:08,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:08,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:08,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:08,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:08,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:08,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:08,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:08,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:08,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:08,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:08,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:08,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:08,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:08,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:08,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:08,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:08,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:08,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:08,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:08,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:08,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:08,596 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 12:21:09,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:09,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:09,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:09,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:09,050 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:09,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 12:21:09,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196303064/5d44ee1aade54b998faa807f86cb40cd/FLAG17cc18e27 [2020-09-25 12:21:09,837 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:09,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 12:21:09,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196303064/5d44ee1aade54b998faa807f86cb40cd/FLAG17cc18e27 [2020-09-25 12:21:10,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/196303064/5d44ee1aade54b998faa807f86cb40cd [2020-09-25 12:21:10,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:10,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:10,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:10,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:10,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:10,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10, skipping insertion in model container [2020-09-25 12:21:10,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:10,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:10,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:10,647 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:10,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:10,917 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:10,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10 WrapperNode [2020-09-25 12:21:10,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:10,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:10,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:10,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:10,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:10,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:11,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:11,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:11,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (1/1) ... [2020-09-25 12:21:11,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:11,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:11,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:11,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:11,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (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 12:21:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:11,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:11,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:11,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:12,562 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:12,562 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:12,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:12 BoogieIcfgContainer [2020-09-25 12:21:12,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:12,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:12,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:12,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:12,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:10" (1/3) ... [2020-09-25 12:21:12,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:12, skipping insertion in model container [2020-09-25 12:21:12,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:10" (2/3) ... [2020-09-25 12:21:12,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:12, skipping insertion in model container [2020-09-25 12:21:12,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:12" (3/3) ... [2020-09-25 12:21:12,585 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 12:21:12,596 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:12,606 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:12,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:12,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:12,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:12,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:12,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:12,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:12,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:12,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:12,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 12:21:12,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:12,721 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, 1, 1, 1, 1, 1] [2020-09-25 12:21:12,721 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 12:21:12,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:12,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:21:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:14,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:18,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 12:21:18,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:18,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:21:18,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:18,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:18,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:21:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:21:18,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:18,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:21:18,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:18,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:18,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:18,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:21:18,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:21:18,446 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 12:21:18,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:21:18,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:18,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:18,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079147757] [2020-09-25 12:21:18,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:18,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:18,483 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:20,457 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 12:21:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:20,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 12:21:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:20,483 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 12:21:20,484 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 12:21:20,496 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 12:21:20,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 12:21:20,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 12:21:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 12:21:20,602 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 12:21:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:20,603 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 12:21:20,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 12:21:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 12:21:20,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:20,614 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:20,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:20,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:20,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:20,615 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 12:21:20,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:20,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048368304] [2020-09-25 12:21:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:21,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:21:25,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:21:25,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:21:25,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:21:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:21:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 12:21:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:21:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:25,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:21:25,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:25,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048368304] [2020-09-25 12:21:25,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:25,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:25,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8855258] [2020-09-25 12:21:25,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:25,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:26,000 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 12:21:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:28,132 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 12:21:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:28,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 12:21:28,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:28,149 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 12:21:28,149 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 12:21:28,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 12:21:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 12:21:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 12:21:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 12:21:28,228 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 12:21:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:28,230 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 12:21:28,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 12:21:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 12:21:28,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:28,240 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:28,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:28,241 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 12:21:28,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:28,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540387472] [2020-09-25 12:21:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:33,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 12:21:33,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:21:33,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:21:33,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:33,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:21:33,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 12:21:33,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:33,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:33,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:33,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:33,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:21:33,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:33,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:33,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:21:33,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:33,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:21:33,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:33,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:33,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:33,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540387472] [2020-09-25 12:21:33,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:33,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:33,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276398142] [2020-09-25 12:21:33,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:33,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:33,589 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 12:21:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:35,782 INFO L93 Difference]: Finished difference Result 2408 states and 3083 transitions. [2020-09-25 12:21:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:35,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 12:21:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:35,793 INFO L225 Difference]: With dead ends: 2408 [2020-09-25 12:21:35,793 INFO L226 Difference]: Without dead ends: 1543 [2020-09-25 12:21:35,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-09-25 12:21:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1463. [2020-09-25 12:21:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-09-25 12:21:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1810 transitions. [2020-09-25 12:21:35,866 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1810 transitions. Word has length 168 [2020-09-25 12:21:35,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:35,867 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 1810 transitions. [2020-09-25 12:21:35,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1810 transitions. [2020-09-25 12:21:35,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 12:21:35,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:35,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:35,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:35,882 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:35,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:35,882 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 12:21:35,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:35,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80684764] [2020-09-25 12:21:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:35,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:37,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:40,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 12:21:40,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:40,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:40,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 12:21:40,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:21:40,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:41,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:41,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:41,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:41,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:41,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:41,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:41,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:41,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:41,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:41,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:21:41,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:41,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 12:21:41,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:41,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:41,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:41,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:21:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:41,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80684764] [2020-09-25 12:21:41,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:41,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:41,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284894133] [2020-09-25 12:21:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:41,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:41,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:41,321 INFO L87 Difference]: Start difference. First operand 1463 states and 1810 transitions. Second operand 5 states. [2020-09-25 12:21:43,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:43,219 INFO L93 Difference]: Finished difference Result 3565 states and 4536 transitions. [2020-09-25 12:21:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:43,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 12:21:43,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:43,233 INFO L225 Difference]: With dead ends: 3565 [2020-09-25 12:21:43,233 INFO L226 Difference]: Without dead ends: 2126 [2020-09-25 12:21:43,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2020-09-25 12:21:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2035. [2020-09-25 12:21:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2035 states. [2020-09-25 12:21:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2614 transitions. [2020-09-25 12:21:43,322 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2614 transitions. Word has length 185 [2020-09-25 12:21:43,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:43,322 INFO L479 AbstractCegarLoop]: Abstraction has 2035 states and 2614 transitions. [2020-09-25 12:21:43,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2614 transitions. [2020-09-25 12:21:43,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 12:21:43,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:43,335 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:43,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:43,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:43,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:43,336 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 12:21:43,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:43,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048679347] [2020-09-25 12:21:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:48,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 12:21:48,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:21:48,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:48,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:21:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:21:48,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:48,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:48,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:21:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:48,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:48,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:48,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:21:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:48,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:21:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:48,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:21:48,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:48,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:21:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:21:48,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048679347] [2020-09-25 12:21:48,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:48,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:21:48,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835863562] [2020-09-25 12:21:48,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:21:48,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:48,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:21:48,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:21:48,813 INFO L87 Difference]: Start difference. First operand 2035 states and 2614 transitions. Second operand 8 states. [2020-09-25 12:21:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:51,207 INFO L93 Difference]: Finished difference Result 4490 states and 5902 transitions. [2020-09-25 12:21:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:21:51,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-09-25 12:21:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:51,222 INFO L225 Difference]: With dead ends: 4490 [2020-09-25 12:21:51,222 INFO L226 Difference]: Without dead ends: 2479 [2020-09-25 12:21:51,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2020-09-25 12:21:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1945. [2020-09-25 12:21:51,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-09-25 12:21:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2445 transitions. [2020-09-25 12:21:51,297 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2445 transitions. Word has length 192 [2020-09-25 12:21:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:51,297 INFO L479 AbstractCegarLoop]: Abstraction has 1945 states and 2445 transitions. [2020-09-25 12:21:51,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:21:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2445 transitions. [2020-09-25 12:21:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 12:21:51,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:51,308 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:51,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:21:51,309 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:51,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 12:21:51,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:51,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348748653] [2020-09-25 12:21:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:56,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 12:21:56,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:21:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 12:21:56,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:56,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:21:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:56,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:21:56,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:56,925 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-09-25 12:21:57,107 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-09-25 12:21:57,326 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2020-09-25 12:21:57,541 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-09-25 12:21:57,747 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 40 [2020-09-25 12:21:57,926 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 36 [2020-09-25 12:21:58,086 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2020-09-25 12:21:58,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:58,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:21:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:21:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:21:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:21:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:21:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:21:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:21:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1