/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:17:10,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:17:10,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:17:10,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:17:10,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:17:10,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:17:10,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:17:10,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:17:10,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:17:10,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:17:10,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:17:10,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:17:10,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:17:10,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:17:10,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:17:10,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:17:10,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:17:10,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:17:10,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:17:10,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:17:10,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:17:10,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:17:10,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:17:10,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:17:10,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:17:10,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:17:10,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:17:10,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:17:10,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:17:10,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:17:10,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:17:10,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:17:10,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:17:10,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:17:10,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:17:10,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:17:10,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:17:10,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:17:10,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:17:10,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:17:10,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:17:10,413 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 11:17:10,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:17:10,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:17:10,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:17:10,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:17:10,441 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:17:10,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:17:10,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:17:10,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:17:10,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:17:10,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:17:10,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:17:10,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:17:10,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:17:10,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:17:10,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:17:10,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:17:10,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:17:10,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:17:10,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:17:10,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:17:10,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:17:10,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:17:10,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:17:10,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:17:10,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:17:10,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:17:10,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:17:10,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:17:10,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:17:10,447 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:17:10,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:17:10,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:17:10,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:17:10,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:17:10,999 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:17:11,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 11:17:11,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b58d937b/1eb77857fdb14101b7cc437efd3981fe/FLAGdc1246a14 [2020-09-25 11:17:11,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:17:11,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 11:17:11,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b58d937b/1eb77857fdb14101b7cc437efd3981fe/FLAGdc1246a14 [2020-09-25 11:17:11,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b58d937b/1eb77857fdb14101b7cc437efd3981fe [2020-09-25 11:17:11,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:17:11,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:17:11,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:11,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:17:11,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:17:11,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:11" (1/1) ... [2020-09-25 11:17:11,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:11, skipping insertion in model container [2020-09-25 11:17:11,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:17:11" (1/1) ... [2020-09-25 11:17:11,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:17:12,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:17:12,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:12,594 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:17:12,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:17:12,870 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:17:12,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12 WrapperNode [2020-09-25 11:17:12,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:17:12,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:17:12,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:17:12,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:17:12,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (1/1) ... [2020-09-25 11:17:12,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:17:12,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:17:12,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:17:12,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:17:12,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (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 11:17:13,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:17:13,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:17:13,075 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:17:13,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:17:13,075 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:17:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:17:13,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:17:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:17:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:17:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:17:13,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:17:14,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:17:14,448 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:17:14,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:14 BoogieIcfgContainer [2020-09-25 11:17:14,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:17:14,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:17:14,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:17:14,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:17:14,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:17:11" (1/3) ... [2020-09-25 11:17:14,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:14, skipping insertion in model container [2020-09-25 11:17:14,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:17:12" (2/3) ... [2020-09-25 11:17:14,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:17:14, skipping insertion in model container [2020-09-25 11:17:14,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:17:14" (3/3) ... [2020-09-25 11:17:14,469 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 11:17:14,481 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:17:14,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:17:14,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:17:14,555 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:17:14,555 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:17:14,555 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:17:14,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:17:14,556 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:17:14,556 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:17:14,556 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:17:14,556 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:17:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 11:17:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 11:17:14,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:14,612 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] [2020-09-25 11:17:14,613 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:14,621 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 11:17:14,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:14,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:17:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:15,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 11:17:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:17:19,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:19,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:17:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:17:19,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 11:17:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:17:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:20,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:20,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:20,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:17:20,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:20,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:20,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:20,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:17:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:20,238 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 11:17:20,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 11:17:20,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:17:20,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:17:20,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264469253] [2020-09-25 11:17:20,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:20,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:20,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:20,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:20,272 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 11:17:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:23,466 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 11:17:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:17:23,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 11:17:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:23,498 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 11:17:23,499 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 11:17:23,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:17:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 11:17:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 11:17:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 11:17:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 11:17:23,687 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 126 [2020-09-25 11:17:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:23,690 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 11:17:23,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 11:17:23,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 11:17:23,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:23,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:23,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:17:23,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2026408437, now seen corresponding path program 1 times [2020-09-25 11:17:23,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:23,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831527576] [2020-09-25 11:17:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:23,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:28,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:17:28,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:28,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:28,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 11:17:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 11:17:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:28,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:28,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:28,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:17:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:28,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 11:17:29,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:29,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:29,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 11:17:29,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:29,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:17:29,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:29,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:29,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:29,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 11:17:29,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:29,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831527576] [2020-09-25 11:17:29,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:29,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:29,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563493168] [2020-09-25 11:17:29,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:29,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:29,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:29,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:29,104 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 11:17:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:31,324 INFO L93 Difference]: Finished difference Result 2247 states and 2909 transitions. [2020-09-25 11:17:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:31,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 11:17:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:31,338 INFO L225 Difference]: With dead ends: 2247 [2020-09-25 11:17:31,338 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 11:17:31,343 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 11:17:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 11:17:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1336. [2020-09-25 11:17:31,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 11:17:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1631 transitions. [2020-09-25 11:17:31,440 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1631 transitions. Word has length 144 [2020-09-25 11:17:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:31,441 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1631 transitions. [2020-09-25 11:17:31,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1631 transitions. [2020-09-25 11:17:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 11:17:31,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:31,446 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:17:31,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:17:31,447 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:31,447 INFO L82 PathProgramCache]: Analyzing trace with hash -149723680, now seen corresponding path program 1 times [2020-09-25 11:17:31,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:31,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639340766] [2020-09-25 11:17:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 11:17:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:17:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 11:17:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:36,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 11:17:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 11:17:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:17:36,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:36,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:17:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:36,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:36,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:36,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:17:36,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:36,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:17:36,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:36,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:36,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:36,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:17:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:36,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639340766] [2020-09-25 11:17:36,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:36,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:36,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376892355] [2020-09-25 11:17:36,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:36,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:36,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:36,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:36,735 INFO L87 Difference]: Start difference. First operand 1336 states and 1631 transitions. Second operand 5 states. [2020-09-25 11:17:38,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:38,701 INFO L93 Difference]: Finished difference Result 3603 states and 4612 transitions. [2020-09-25 11:17:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:38,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 11:17:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:38,721 INFO L225 Difference]: With dead ends: 3603 [2020-09-25 11:17:38,721 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 11:17:38,727 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 11:17:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 11:17:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2249. [2020-09-25 11:17:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 11:17:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2723 transitions. [2020-09-25 11:17:38,826 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2723 transitions. Word has length 150 [2020-09-25 11:17:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:38,827 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2723 transitions. [2020-09-25 11:17:38,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2723 transitions. [2020-09-25 11:17:38,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 11:17:38,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:38,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:38,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:17:38,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:38,838 INFO L82 PathProgramCache]: Analyzing trace with hash 537580245, now seen corresponding path program 1 times [2020-09-25 11:17:38,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:38,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378266614] [2020-09-25 11:17:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:40,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:43,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:43,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 11:17:43,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:17:43,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:17:43,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:43,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 11:17:43,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 11:17:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:44,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:44,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:44,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:17:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:17:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:17:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:44,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:44,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:17:44,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:44,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:17:44,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:44,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:44,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:17:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:17:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:17:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:44,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378266614] [2020-09-25 11:17:44,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:44,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:17:44,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384550134] [2020-09-25 11:17:44,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:17:44,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:17:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:17:44,271 INFO L87 Difference]: Start difference. First operand 2249 states and 2723 transitions. Second operand 5 states. [2020-09-25 11:17:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:17:46,717 INFO L93 Difference]: Finished difference Result 5870 states and 7399 transitions. [2020-09-25 11:17:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:17:46,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 11:17:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:17:46,743 INFO L225 Difference]: With dead ends: 5870 [2020-09-25 11:17:46,743 INFO L226 Difference]: Without dead ends: 3643 [2020-09-25 11:17:46,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:17:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2020-09-25 11:17:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3329. [2020-09-25 11:17:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3329 states. [2020-09-25 11:17:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 4080 transitions. [2020-09-25 11:17:46,881 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 4080 transitions. Word has length 161 [2020-09-25 11:17:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:17:46,881 INFO L479 AbstractCegarLoop]: Abstraction has 3329 states and 4080 transitions. [2020-09-25 11:17:46,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:17:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 4080 transitions. [2020-09-25 11:17:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 11:17:46,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:17:46,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:17:46,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:17:46,899 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:17:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:17:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash -594145710, now seen corresponding path program 1 times [2020-09-25 11:17:46,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:17:46,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756915236] [2020-09-25 11:17:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:17:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:49,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 11:17:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:17:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:17:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:51,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 11:17:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:17:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-09-25 11:17:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:17:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:17:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:52,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:52,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:17:52,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:17:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:17:52,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:52,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:17:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:17:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:17:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:17:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:17:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:17:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:17:53,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:17:53,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:17:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:17:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 979 [2020-09-25 11:17:53,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:17:53,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:17:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:17:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:17:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 11:17:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:17:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:17:53,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756915236] [2020-09-25 11:17:53,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:17:53,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:17:53,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862571150] [2020-09-25 11:17:53,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:17:53,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:17:53,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:17:53,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:17:53,672 INFO L87 Difference]: Start difference. First operand 3329 states and 4080 transitions. Second operand 12 states.