/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:09,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:09,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:09,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:09,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:09,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:09,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:09,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:09,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:09,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:09,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:09,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:09,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:09,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:09,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:09,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:09,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:09,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:09,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:09,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:09,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:09,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:09,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:09,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:09,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:09,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:09,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:09,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:09,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:09,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:09,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:09,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:09,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:09,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:09,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:09,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:09,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:09,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:09,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:09,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:10,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:10,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:10,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:10,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:10,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:10,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:10,051 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:10,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:10,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:10,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:10,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:10,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:10,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:10,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:10,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:10,054 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:10,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:10,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:10,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:10,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:10,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:10,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:10,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:10,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:10,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:10,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:10,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:10,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:10,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:10,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:10,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:10,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:10,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:10,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:10,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:10,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:10,594 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:10,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 14:40:10,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6a9749b/73c74fe694e14f72a73e7596a7f121d6/FLAGd185e853d [2020-09-25 14:40:11,309 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:11,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 14:40:11,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6a9749b/73c74fe694e14f72a73e7596a7f121d6/FLAGd185e853d [2020-09-25 14:40:11,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d6a9749b/73c74fe694e14f72a73e7596a7f121d6 [2020-09-25 14:40:11,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:11,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:11,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:11,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:11,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:11,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:11" (1/1) ... [2020-09-25 14:40:11,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:11, skipping insertion in model container [2020-09-25 14:40:11,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:11" (1/1) ... [2020-09-25 14:40:11,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:11,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:12,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:12,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:12,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:12,441 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:12,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12 WrapperNode [2020-09-25 14:40:12,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:12,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:12,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:12,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:12,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:12,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:12,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:12,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:12,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (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 14:40:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:12,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:12,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:12,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:12,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:12,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:14,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:14,345 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:14,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:14 BoogieIcfgContainer [2020-09-25 14:40:14,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:14,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:14,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:14,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:14,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:11" (1/3) ... [2020-09-25 14:40:14,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:14, skipping insertion in model container [2020-09-25 14:40:14,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (2/3) ... [2020-09-25 14:40:14,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223d6873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:14, skipping insertion in model container [2020-09-25 14:40:14,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:14" (3/3) ... [2020-09-25 14:40:14,368 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 14:40:14,380 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:14,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:14,418 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:14,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:14,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:14,460 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:14,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:14,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:14,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:14,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:14,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:14,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 14:40:14,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:14,517 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 14:40:14,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 14:40:14,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:14,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424934705] [2020-09-25 14:40:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:14,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:19,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 14:40:19,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-09-25 14:40:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:40:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 14:40:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:20,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:20,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:20,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:20,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:20,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:40:20,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:40:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:20,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424934705] [2020-09-25 14:40:20,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:20,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:40:20,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683033045] [2020-09-25 14:40:20,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:20,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:20,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:20,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:20,404 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 14:40:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:23,985 INFO L93 Difference]: Finished difference Result 1430 states and 2024 transitions. [2020-09-25 14:40:23,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:40:23,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 14:40:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:24,013 INFO L225 Difference]: With dead ends: 1430 [2020-09-25 14:40:24,014 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 14:40:24,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:24,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 14:40:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 775. [2020-09-25 14:40:24,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-09-25 14:40:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 947 transitions. [2020-09-25 14:40:24,142 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 947 transitions. Word has length 126 [2020-09-25 14:40:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:24,143 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 947 transitions. [2020-09-25 14:40:24,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:24,143 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 947 transitions. [2020-09-25 14:40:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 14:40:24,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:24,160 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, 1] [2020-09-25 14:40:24,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:24,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:24,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:24,161 INFO L82 PathProgramCache]: Analyzing trace with hash 830786714, now seen corresponding path program 1 times [2020-09-25 14:40:24,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:24,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054468109] [2020-09-25 14:40:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:29,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 14:40:29,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:29,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 14:40:29,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:29,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:29,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 14:40:29,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:40:29,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:40:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:29,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:29,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:29,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:29,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:29,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:29,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:29,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:40:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:29,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:29,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:29,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:29,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:29,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:40:29,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:29,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:29,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 14:40:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:29,617 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 14:40:29,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054468109] [2020-09-25 14:40:29,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:29,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:40:29,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066114771] [2020-09-25 14:40:29,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:40:29,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:29,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:40:29,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:29,624 INFO L87 Difference]: Start difference. First operand 775 states and 947 transitions. Second operand 6 states. [2020-09-25 14:40:32,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:32,004 INFO L93 Difference]: Finished difference Result 2072 states and 2615 transitions. [2020-09-25 14:40:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:32,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-09-25 14:40:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:32,018 INFO L225 Difference]: With dead ends: 2072 [2020-09-25 14:40:32,019 INFO L226 Difference]: Without dead ends: 1319 [2020-09-25 14:40:32,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-09-25 14:40:32,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1278. [2020-09-25 14:40:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-09-25 14:40:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1598 transitions. [2020-09-25 14:40:32,094 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1598 transitions. Word has length 143 [2020-09-25 14:40:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:32,098 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1598 transitions. [2020-09-25 14:40:32,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:40:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1598 transitions. [2020-09-25 14:40:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 14:40:32,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:32,119 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, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:32,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:32,121 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash 678126162, now seen corresponding path program 1 times [2020-09-25 14:40:32,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:32,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32355026] [2020-09-25 14:40:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 14:40:37,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:37,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:40:37,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:40:37,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 14:40:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:37,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:37,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:40:37,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:37,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:37,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:37,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:37,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:37,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:37,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:37,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:37,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 14:40:37,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:37,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:37,473 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 14:40:37,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32355026] [2020-09-25 14:40:37,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:37,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:37,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619870484] [2020-09-25 14:40:37,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:37,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:37,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:37,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:37,477 INFO L87 Difference]: Start difference. First operand 1278 states and 1598 transitions. Second operand 5 states. [2020-09-25 14:40:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:39,359 INFO L93 Difference]: Finished difference Result 3004 states and 3855 transitions. [2020-09-25 14:40:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:39,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 14:40:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:39,375 INFO L225 Difference]: With dead ends: 3004 [2020-09-25 14:40:39,379 INFO L226 Difference]: Without dead ends: 1748 [2020-09-25 14:40:39,385 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 14:40:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-09-25 14:40:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1736. [2020-09-25 14:40:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-09-25 14:40:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2215 transitions. [2020-09-25 14:40:39,459 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2215 transitions. Word has length 155 [2020-09-25 14:40:39,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:39,460 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2215 transitions. [2020-09-25 14:40:39,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2215 transitions. [2020-09-25 14:40:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:40:39,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:39,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:39,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:39,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash -221683794, now seen corresponding path program 1 times [2020-09-25 14:40:39,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:39,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723424683] [2020-09-25 14:40:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 14:40:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 14:40:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:40:44,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:44,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 14:40:44,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 14:40:44,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:44,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:44,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:44,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:44,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:40:44,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:44,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:44,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:44,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:40:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:44,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:44,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:40:44,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:44,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:40:44,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 14:40:44,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723424683] [2020-09-25 14:40:44,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:44,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:44,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511951879] [2020-09-25 14:40:44,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:44,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:44,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:44,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:44,809 INFO L87 Difference]: Start difference. First operand 1736 states and 2215 transitions. Second operand 5 states. [2020-09-25 14:40:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:47,422 INFO L93 Difference]: Finished difference Result 4789 states and 6352 transitions. [2020-09-25 14:40:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:47,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 14:40:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:47,444 INFO L225 Difference]: With dead ends: 4789 [2020-09-25 14:40:47,445 INFO L226 Difference]: Without dead ends: 3075 [2020-09-25 14:40:47,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 14:40:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-09-25 14:40:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2960. [2020-09-25 14:40:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2960 states. [2020-09-25 14:40:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3825 transitions. [2020-09-25 14:40:47,574 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3825 transitions. Word has length 161 [2020-09-25 14:40:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:47,574 INFO L479 AbstractCegarLoop]: Abstraction has 2960 states and 3825 transitions. [2020-09-25 14:40:47,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3825 transitions. [2020-09-25 14:40:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 14:40:47,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:47,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:47,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:47,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash -850064427, now seen corresponding path program 1 times [2020-09-25 14:40:47,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:47,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808948584] [2020-09-25 14:40:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:49,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:52,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 14:40:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 14:40:52,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:52,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:52,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:52,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:52,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:52,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:52,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:52,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:52,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:52,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:40:52,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:52,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:52,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:40:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:52,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:52,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:40:52,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:40:52,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:52,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:40:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 14:40:52,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808948584] [2020-09-25 14:40:52,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:52,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:52,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708674581] [2020-09-25 14:40:52,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:52,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:52,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:52,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:52,885 INFO L87 Difference]: Start difference. First operand 2960 states and 3825 transitions. Second operand 5 states. [2020-09-25 14:40:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:55,023 INFO L93 Difference]: Finished difference Result 7124 states and 9424 transitions. [2020-09-25 14:40:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:55,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 14:40:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:55,040 INFO L225 Difference]: With dead ends: 7124 [2020-09-25 14:40:55,041 INFO L226 Difference]: Without dead ends: 2739 [2020-09-25 14:40:55,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 14:40:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2020-09-25 14:40:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2729. [2020-09-25 14:40:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2729 states. [2020-09-25 14:40:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 3407 transitions. [2020-09-25 14:40:55,142 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 3407 transitions. Word has length 177 [2020-09-25 14:40:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:55,143 INFO L479 AbstractCegarLoop]: Abstraction has 2729 states and 3407 transitions. [2020-09-25 14:40:55,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 3407 transitions. [2020-09-25 14:40:55,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 14:40:55,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:55,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:55,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:55,155 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:55,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1005138040, now seen corresponding path program 1 times [2020-09-25 14:40:55,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:55,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970275517] [2020-09-25 14:40:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:55,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 14:41:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:41:00,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 14:41:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 14:41:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:00,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:00,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:00,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:41:00,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:00,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:00,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:41:00,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:41:00,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:00,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:00,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:41:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:00,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:41:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:00,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 14:41:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:00,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:00,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:00,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:00,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:41:00,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 14:41:00,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970275517] [2020-09-25 14:41:00,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:00,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:41:00,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940403548] [2020-09-25 14:41:00,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:41:00,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:00,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:41:00,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:00,482 INFO L87 Difference]: Start difference. First operand 2729 states and 3407 transitions. Second operand 6 states.