/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_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:35,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:35,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:35,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:35,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:35,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:35,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:35,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:35,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:35,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:35,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:35,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:35,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:35,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:35,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:35,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:35,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:35,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:35,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:35,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:35,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:35,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:35,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:35,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:35,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:35,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:35,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:35,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:35,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:35,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:35,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:35,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:35,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:35,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:35,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:35,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:35,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:35,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:35,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:35,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:35,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:35,524 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 12:21:35,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:35,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:35,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:35,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:35,591 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:35,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:35,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:35,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:35,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:35,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:35,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:35,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:35,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:35,594 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:35,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:35,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:35,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:35,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:35,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:35,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:35,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:35,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:35,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:35,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:35,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:35,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:35,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:35,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:35,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:35,598 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 12:21:36,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:36,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:36,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:36,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:36,146 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:36,147 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 12:21:36,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87a113e9/0d86c694b9044f98894e1b3a7961bc89/FLAGc704b6a9a [2020-09-25 12:21:36,924 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:36,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-09-25 12:21:36,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87a113e9/0d86c694b9044f98894e1b3a7961bc89/FLAGc704b6a9a [2020-09-25 12:21:37,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b87a113e9/0d86c694b9044f98894e1b3a7961bc89 [2020-09-25 12:21:37,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:37,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:37,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:37,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:37,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:37,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:37,140 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 12:21:37, skipping insertion in model container [2020-09-25 12:21:37,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:37,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:37,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:37,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:37,739 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:37,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:37,986 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:37,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37 WrapperNode [2020-09-25 12:21:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:37,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:37,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:37,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:38,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (1/1) ... [2020-09-25 12:21:38,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:38,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:38,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:38,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:38,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (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 12:21:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:39,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:39,585 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:39,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:39 BoogieIcfgContainer [2020-09-25 12:21:39,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:39,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:39,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:39,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:39,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:37" (1/3) ... [2020-09-25 12:21:39,602 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 12:21:39, skipping insertion in model container [2020-09-25 12:21:39,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:37" (2/3) ... [2020-09-25 12:21:39,603 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 12:21:39, skipping insertion in model container [2020-09-25 12:21:39,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:39" (3/3) ... [2020-09-25 12:21:39,606 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-09-25 12:21:39,619 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:39,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:39,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:39,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:39,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:39,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:39,695 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:39,695 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:39,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:39,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:39,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 12:21:39,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:39,751 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] [2020-09-25 12:21:39,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -21747025, now seen corresponding path program 1 times [2020-09-25 12:21:39,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:39,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:21:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 12:21:45,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:21:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 12:21:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:45,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:45,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:45,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:21:45,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:45,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:45,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:45,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:45,384 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 12:21:45,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 12:21:45,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:45,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:45,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654721879] [2020-09-25 12:21:45,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:45,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:45,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:45,419 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:47,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:47,598 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 12:21:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:47,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-09-25 12:21:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:47,626 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 12:21:47,626 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 12:21:47,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 12:21:47,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 12:21:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 12:21:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 12:21:47,751 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 120 [2020-09-25 12:21:47,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:47,752 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 12:21:47,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 12:21:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 12:21:47,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:47,759 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:47,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:47,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2128216958, now seen corresponding path program 1 times [2020-09-25 12:21:47,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:47,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938020093] [2020-09-25 12:21:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:49,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:49,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 12:21:49,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2058 [2020-09-25 12:21:49,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:49,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:21:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:21:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:50,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:50,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:50,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:50,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:50,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:50,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:50,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:50,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:21:50,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:50,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:50,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:21:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:50,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938020093] [2020-09-25 12:21:50,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:50,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:50,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269920394] [2020-09-25 12:21:50,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:50,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:50,136 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 12:21:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:52,401 INFO L93 Difference]: Finished difference Result 1503 states and 1831 transitions. [2020-09-25 12:21:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:52,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 12:21:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:52,411 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 12:21:52,412 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 12:21:52,415 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 12:21:52,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 12:21:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 12:21:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 12:21:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1040 transitions. [2020-09-25 12:21:52,461 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1040 transitions. Word has length 141 [2020-09-25 12:21:52,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:52,462 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1040 transitions. [2020-09-25 12:21:52,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1040 transitions. [2020-09-25 12:21:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:21:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:52,467 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:52,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:52,467 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:52,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1222044605, now seen corresponding path program 1 times [2020-09-25 12:21:52,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:52,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457475515] [2020-09-25 12:21:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:57,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:21:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:21:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:21:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:57,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:57,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:57,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:58,300 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 40 [2020-09-25 12:21:58,470 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-09-25 12:21:58,648 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 37 [2020-09-25 12:21:58,818 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-09-25 12:21:58,973 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2020-09-25 12:21:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:59,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:21:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:59,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:59,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:59,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:21:59,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:59,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 12:21:59,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:59,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:59,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:59,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:21:59,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:59,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457475515] [2020-09-25 12:21:59,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:59,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:21:59,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389384638] [2020-09-25 12:21:59,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:21:59,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:21:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:21:59,558 INFO L87 Difference]: Start difference. First operand 891 states and 1040 transitions. Second operand 19 states. [2020-09-25 12:22:00,292 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 12:22:00,457 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 12:22:00,879 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 12:22:01,383 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 12:22:01,762 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 12:22:01,948 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 12:22:02,767 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 12:22:03,074 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 12:22:03,553 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 12:22:03,750 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 12:22:04,877 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 12:22:05,285 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 12:22:05,622 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 12:22:05,906 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 12:22:06,832 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 12:22:07,153 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 12:22:08,020 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 12:22:08,271 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 12:22:08,963 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 12:22:09,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:09,854 INFO L93 Difference]: Finished difference Result 2685 states and 3390 transitions. [2020-09-25 12:22:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 12:22:09,855 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 142 [2020-09-25 12:22:09,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:09,873 INFO L225 Difference]: With dead ends: 2685 [2020-09-25 12:22:09,873 INFO L226 Difference]: Without dead ends: 1818 [2020-09-25 12:22:09,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 12:22:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2020-09-25 12:22:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1709. [2020-09-25 12:22:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 12:22:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2006 transitions. [2020-09-25 12:22:09,961 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2006 transitions. Word has length 142 [2020-09-25 12:22:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:09,963 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2006 transitions. [2020-09-25 12:22:09,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 12:22:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2006 transitions. [2020-09-25 12:22:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:22:09,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:09,973 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:09,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:09,974 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:09,975 INFO L82 PathProgramCache]: Analyzing trace with hash -112420166, now seen corresponding path program 1 times [2020-09-25 12:22:09,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:09,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497650656] [2020-09-25 12:22:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:11,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:12,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:15,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:22:15,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:22:15,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:22:15,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:15,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:15,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 12:22:15,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 12:22:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:15,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:22:15,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:15,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:15,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:15,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:15,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497650656] [2020-09-25 12:22:15,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:15,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:15,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925093729] [2020-09-25 12:22:15,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:15,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:15,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:15,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:15,285 INFO L87 Difference]: Start difference. First operand 1709 states and 2006 transitions. Second operand 5 states. [2020-09-25 12:22:17,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:17,759 INFO L93 Difference]: Finished difference Result 4389 states and 5305 transitions. [2020-09-25 12:22:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:17,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 12:22:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:17,780 INFO L225 Difference]: With dead ends: 4389 [2020-09-25 12:22:17,781 INFO L226 Difference]: Without dead ends: 2704 [2020-09-25 12:22:17,787 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 12:22:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2020-09-25 12:22:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2440. [2020-09-25 12:22:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2020-09-25 12:22:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 2932 transitions. [2020-09-25 12:22:17,890 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 2932 transitions. Word has length 149 [2020-09-25 12:22:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:17,891 INFO L479 AbstractCegarLoop]: Abstraction has 2440 states and 2932 transitions. [2020-09-25 12:22:17,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 2932 transitions. [2020-09-25 12:22:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 12:22:17,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:17,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:17,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:17,902 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:17,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:17,902 INFO L82 PathProgramCache]: Analyzing trace with hash 425868186, now seen corresponding path program 1 times [2020-09-25 12:22:17,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:17,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705004756] [2020-09-25 12:22:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:18,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:22,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:22,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 12:22:22,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:22:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:22,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 12:22:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:22:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:23,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:23,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:23,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:22:23,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:23,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:23,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:23,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:23,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:22:23,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:23,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:22:23,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:23,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:23,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:22:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:23,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705004756] [2020-09-25 12:22:23,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:23,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:22:23,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421424609] [2020-09-25 12:22:23,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:22:23,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:23,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:22:23,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:23,229 INFO L87 Difference]: Start difference. First operand 2440 states and 2932 transitions. Second operand 6 states. [2020-09-25 12:22:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:26,037 INFO L93 Difference]: Finished difference Result 6741 states and 8323 transitions. [2020-09-25 12:22:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:22:26,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-09-25 12:22:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:26,062 INFO L225 Difference]: With dead ends: 6741 [2020-09-25 12:22:26,062 INFO L226 Difference]: Without dead ends: 4325 [2020-09-25 12:22:26,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:22:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-09-25 12:22:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 3451. [2020-09-25 12:22:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3451 states. [2020-09-25 12:22:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4245 transitions. [2020-09-25 12:22:26,195 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4245 transitions. Word has length 155 [2020-09-25 12:22:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:26,195 INFO L479 AbstractCegarLoop]: Abstraction has 3451 states and 4245 transitions. [2020-09-25 12:22:26,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:22:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4245 transitions. [2020-09-25 12:22:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 12:22:26,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:26,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:26,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:26,210 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash 479077002, now seen corresponding path program 1 times [2020-09-25 12:22:26,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:26,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107549130] [2020-09-25 12:22:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking...