/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=HIGHLEXORDER --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/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:50:39,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:50:39,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:50:39,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:50:39,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:50:39,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:50:39,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:50:39,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:50:39,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:50:39,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:50:39,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:50:39,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:50:39,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:50:39,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:50:39,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:50:39,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:50:39,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:50:39,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:50:39,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:50:39,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:50:39,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:50:39,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:50:39,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:50:39,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:50:39,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:50:39,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:50:39,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:50:39,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:50:39,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:50:39,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:50:39,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:50:39,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:50:39,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:50:39,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:50:39,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:50:39,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:50:39,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:50:39,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:50:39,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:50:39,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:50:39,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:50:39,944 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 [2020-09-24 22:50:39,995 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:50:39,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:50:39,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:50:39,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:50:39,998 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:50:39,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:50:39,999 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:50:39,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:50:40,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:50:40,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:50:40,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:50:40,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:50:40,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:50:40,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:50:40,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:50:40,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:50:40,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:50:40,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:50:40,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:50:40,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:50:40,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:50:40,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:50:40,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:50:40,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:50:40,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:50:40,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:50:40,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:50:40,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:50:40,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:50:40,006 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:50:40,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:50:40,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:50:40,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:50:40,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:50:40,501 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:50:40,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 22:50:40,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d9b9f524/4c735eca50034c15a0e7b06983d930e5/FLAGdc25bd304 [2020-09-24 22:50:41,290 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:50:41,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-24 22:50:41,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d9b9f524/4c735eca50034c15a0e7b06983d930e5/FLAGdc25bd304 [2020-09-24 22:50:41,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d9b9f524/4c735eca50034c15a0e7b06983d930e5 [2020-09-24 22:50:41,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:50:41,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:50:41,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:50:41,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:50:41,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:50:41,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:50:41" (1/1) ... [2020-09-24 22:50:41,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:41, skipping insertion in model container [2020-09-24 22:50:41,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:50:41" (1/1) ... [2020-09-24 22:50:41,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:50:41,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:50:42,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:50:42,106 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:50:42,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:50:42,393 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:50:42,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42 WrapperNode [2020-09-24 22:50:42,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:50:42,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:50:42,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:50:42,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:50:42,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (1/1) ... [2020-09-24 22:50:42,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:50:42,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:50:42,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:50:42,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:50:42,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (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 [2020-09-24 22:50:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:50:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:50:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 22:50:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:50:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 22:50:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:50:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:50:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:50:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:50:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:50:42,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:50:44,239 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:50:44,239 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:50:44,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:50:44 BoogieIcfgContainer [2020-09-24 22:50:44,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:50:44,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:50:44,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:50:44,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:50:44,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:50:41" (1/3) ... [2020-09-24 22:50:44,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:50:44, skipping insertion in model container [2020-09-24 22:50:44,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:50:42" (2/3) ... [2020-09-24 22:50:44,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:50:44, skipping insertion in model container [2020-09-24 22:50:44,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:50:44" (3/3) ... [2020-09-24 22:50:44,260 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-24 22:50:44,273 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:50:44,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:50:44,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:50:44,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:50:44,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:50:44,350 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:50:44,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:50:44,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:50:44,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:50:44,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:50:44,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:50:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 22:50:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 22:50:44,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:50:44,398 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] [2020-09-24 22:50:44,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:50:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:50:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-24 22:50:44,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:50:44,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-24 22:50:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:50:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:45,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:50:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 22:50:46,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:50:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1611 [2020-09-24 22:50:46,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:50:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:50:46,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:50:46,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 22:50:46,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:50:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:50:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:46,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:46,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:50:46,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:50:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:50:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 22:50:46,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:50:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:50:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:50:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:50:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:50:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:50:46,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-24 22:50:46,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:50:46,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:50:46,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514538398] [2020-09-24 22:50:46,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:50:46,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:50:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:50:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:50:46,457 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 22:50:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:50:48,596 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 22:50:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:50:48,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-24 22:50:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:50:48,645 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 22:50:48,645 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 22:50:48,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:50:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 22:50:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 22:50:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 22:50:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 22:50:48,814 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 80 [2020-09-24 22:50:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:50:48,815 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 22:50:48,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:50:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 22:50:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 22:50:48,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:50:48,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:50:48,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:50:48,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:50:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:50:48,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-24 22:50:48,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:50:48,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026990829] [2020-09-24 22:50:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:50:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:49,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:49,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:52,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:50:52,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 22:50:52,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:50:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4079 [2020-09-24 22:50:52,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:50:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:50:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 22:50:52,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:50:52,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:50:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:50:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:53,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:50:53,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:50:53,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:50:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:50:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:50:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:50:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:50:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:50:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:50:53,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:50:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:50:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 22:50:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:50:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 22:50:53,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:50:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:50:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:50:53,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 22:50:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:50:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:50:53,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026990829] [2020-09-24 22:50:53,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:50:53,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:50:53,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899542521] [2020-09-24 22:50:53,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:50:53,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:50:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:50:53,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:50:53,341 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 22:50:55,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:50:55,279 INFO L93 Difference]: Finished difference Result 1247 states and 1527 transitions. [2020-09-24 22:50:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:50:55,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-24 22:50:55,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:50:55,285 INFO L225 Difference]: With dead ends: 1247 [2020-09-24 22:50:55,285 INFO L226 Difference]: Without dead ends: 717 [2020-09-24 22:50:55,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:50:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-09-24 22:50:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 697. [2020-09-24 22:50:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 22:50:55,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 807 transitions. [2020-09-24 22:50:55,310 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 807 transitions. Word has length 159 [2020-09-24 22:50:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:50:55,311 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 807 transitions. [2020-09-24 22:50:55,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:50:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 807 transitions. [2020-09-24 22:50:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 22:50:55,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:50:55,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:50:55,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:50:55,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:50:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:50:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1835717318, now seen corresponding path program 1 times [2020-09-24 22:50:55,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:50:55,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581167200] [2020-09-24 22:50:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:50:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:50:55,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:50:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:00,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:00,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 22:51:00,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:51:00,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4773 [2020-09-24 22:51:00,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:00,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:51:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 22:51:00,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 22:51:00,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:00,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:51:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:00,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:00,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:51:00,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:51:00,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:51:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:00,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:51:00,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:51:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:51:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:00,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:00,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:00,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 22:51:00,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:00,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 22:51:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:51:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:00,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:51:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:51:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:51:00,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581167200] [2020-09-24 22:51:00,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:51:00,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:51:00,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303914318] [2020-09-24 22:51:00,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:51:00,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:51:00,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:51:00,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:51:00,514 INFO L87 Difference]: Start difference. First operand 697 states and 807 transitions. Second operand 5 states. [2020-09-24 22:51:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:51:02,509 INFO L93 Difference]: Finished difference Result 1248 states and 1491 transitions. [2020-09-24 22:51:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:51:02,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-24 22:51:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:51:02,520 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 22:51:02,521 INFO L226 Difference]: Without dead ends: 1246 [2020-09-24 22:51:02,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:51:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2020-09-24 22:51:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1196. [2020-09-24 22:51:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-24 22:51:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1432 transitions. [2020-09-24 22:51:02,570 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1432 transitions. Word has length 166 [2020-09-24 22:51:02,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:51:02,572 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1432 transitions. [2020-09-24 22:51:02,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:51:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1432 transitions. [2020-09-24 22:51:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 22:51:02,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:51:02,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:51:02,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:51:02,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:51:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:51:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash -46198788, now seen corresponding path program 1 times [2020-09-24 22:51:02,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:51:02,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864207137] [2020-09-24 22:51:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:51:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:07,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:07,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 22:51:07,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:51:07,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 22:51:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:51:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-24 22:51:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:51:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:51:07,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:51:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:07,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:07,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:51:07,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:07,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:51:07,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:51:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:51:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:07,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:51:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:07,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:51:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:07,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 22:51:07,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:51:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:07,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 22:51:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:51:07,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864207137] [2020-09-24 22:51:07,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:51:07,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:51:07,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355742871] [2020-09-24 22:51:07,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:51:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:51:07,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:51:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:51:07,980 INFO L87 Difference]: Start difference. First operand 1196 states and 1432 transitions. Second operand 5 states. [2020-09-24 22:51:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:51:09,825 INFO L93 Difference]: Finished difference Result 2701 states and 3368 transitions. [2020-09-24 22:51:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:51:09,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-24 22:51:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:51:09,839 INFO L225 Difference]: With dead ends: 2701 [2020-09-24 22:51:09,840 INFO L226 Difference]: Without dead ends: 1520 [2020-09-24 22:51:09,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:51:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2020-09-24 22:51:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1500. [2020-09-24 22:51:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-09-24 22:51:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1786 transitions. [2020-09-24 22:51:09,902 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1786 transitions. Word has length 176 [2020-09-24 22:51:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:51:09,903 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1786 transitions. [2020-09-24 22:51:09,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:51:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1786 transitions. [2020-09-24 22:51:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 22:51:09,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:51:09,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:51:09,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:51:09,909 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:51:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:51:09,909 INFO L82 PathProgramCache]: Analyzing trace with hash 325383270, now seen corresponding path program 1 times [2020-09-24 22:51:09,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:51:09,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861113411] [2020-09-24 22:51:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:51:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:10,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:11,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:14,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 22:51:14,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:51:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4375 [2020-09-24 22:51:14,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:51:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-09-24 22:51:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 22:51:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:51:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:51:14,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:51:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:51:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:51:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:51:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:14,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:14,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 22:51:14,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:14,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 22:51:14,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:14,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:51:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 22:51:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:51:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:51:14,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861113411] [2020-09-24 22:51:14,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:51:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 22:51:14,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435053494] [2020-09-24 22:51:14,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:51:14,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:51:14,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:51:14,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:51:14,742 INFO L87 Difference]: Start difference. First operand 1500 states and 1786 transitions. Second operand 5 states. [2020-09-24 22:51:16,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:51:16,501 INFO L93 Difference]: Finished difference Result 4211 states and 5167 transitions. [2020-09-24 22:51:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:51:16,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-24 22:51:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:51:16,516 INFO L225 Difference]: With dead ends: 4211 [2020-09-24 22:51:16,516 INFO L226 Difference]: Without dead ends: 2726 [2020-09-24 22:51:16,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:51:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2020-09-24 22:51:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2266. [2020-09-24 22:51:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-09-24 22:51:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2767 transitions. [2020-09-24 22:51:16,620 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2767 transitions. Word has length 198 [2020-09-24 22:51:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:51:16,621 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 2767 transitions. [2020-09-24 22:51:16,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:51:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2767 transitions. [2020-09-24 22:51:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-24 22:51:16,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:51:16,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:51:16,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:51:16,632 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:51:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:51:16,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1284380673, now seen corresponding path program 1 times [2020-09-24 22:51:16,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:51:16,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507530665] [2020-09-24 22:51:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:51:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:17,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:17,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:21,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-09-24 22:51:21,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:51:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 22:51:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:51:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 22:51:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 22:51:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:51:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:21,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 22:51:21,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:51:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:51:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:51:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 22:51:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:21,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:21,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 22:51:21,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:21,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 22:51:21,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:51:21,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:51:21,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 22:51:21,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:51:21,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 22:51:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:22,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:51:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:51:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:51:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 22:51:22,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:51:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:51:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:51:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 22:51:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:51:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:51:22,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507530665] [2020-09-24 22:51:22,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:51:22,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:51:22,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857113005] [2020-09-24 22:51:22,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:51:22,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:51:22,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:51:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:51:22,381 INFO L87 Difference]: Start difference. First operand 2266 states and 2767 transitions. Second operand 7 states. [2020-09-24 22:51:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:51:24,686 INFO L93 Difference]: Finished difference Result 5539 states and 6928 transitions. [2020-09-24 22:51:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:51:24,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-09-24 22:51:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:51:24,705 INFO L225 Difference]: With dead ends: 5539 [2020-09-24 22:51:24,705 INFO L226 Difference]: Without dead ends: 2178 [2020-09-24 22:51:24,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:51:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2020-09-24 22:51:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2084. [2020-09-24 22:51:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-24 22:51:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2500 transitions. [2020-09-24 22:51:24,876 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2500 transitions. Word has length 271 [2020-09-24 22:51:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:51:24,877 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2500 transitions. [2020-09-24 22:51:24,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:51:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2500 transitions. [2020-09-24 22:51:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-24 22:51:24,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:51:24,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:51:24,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:51:24,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:51:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:51:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash 94073539, now seen corresponding path program 1 times [2020-09-24 22:51:24,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:51:24,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443006286] [2020-09-24 22:51:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:51:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:51:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:51:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking...