/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:51:10,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:51:10,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:51:10,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:51:10,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:51:10,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:51:10,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:51:10,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:51:10,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:51:10,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:51:10,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:51:10,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:51:10,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:51:10,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:51:10,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:51:10,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:51:10,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:51:10,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:51:10,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:51:10,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:51:10,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:51:10,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:51:10,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:51:10,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:51:10,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:51:10,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:51:10,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:51:10,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:51:10,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:51:10,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:51:10,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:51:10,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:51:10,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:51:10,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:51:10,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:51:10,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:51:10,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:51:10,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:51:10,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:51:10,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:51:10,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:51:10,443 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 07:51:10,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:51:10,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:51:10,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:51:10,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:51:10,473 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:51:10,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:51:10,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:51:10,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:51:10,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:51:10,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:51:10,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:51:10,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:51:10,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:51:10,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:51:10,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:51:10,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:51:10,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:51:10,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:51:10,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:51:10,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:51:10,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:51:10,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:51:10,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:51:10,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:51:10,478 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:51:10,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:51:10,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:51:10,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:51:10,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:51:10,988 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:51:10,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 07:51:11,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958067a34/3a5f9c5bd9d34a129fbce734d71ae5df/FLAG5278cd6da [2020-09-25 07:51:11,688 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:51:11,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label19.c [2020-09-25 07:51:11,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958067a34/3a5f9c5bd9d34a129fbce734d71ae5df/FLAG5278cd6da [2020-09-25 07:51:11,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/958067a34/3a5f9c5bd9d34a129fbce734d71ae5df [2020-09-25 07:51:11,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:51:11,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:51:11,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:11,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:51:11,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:51:11,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:11" (1/1) ... [2020-09-25 07:51:11,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:11, skipping insertion in model container [2020-09-25 07:51:11,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:51:11" (1/1) ... [2020-09-25 07:51:11,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:51:12,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:51:12,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:12,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:51:12,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:51:12,830 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:51:12,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12 WrapperNode [2020-09-25 07:51:12,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:51:12,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:51:12,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:51:12,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:51:12,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:12,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (1/1) ... [2020-09-25 07:51:13,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:51:13,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:51:13,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:51:13,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:51:13,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (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 07:51:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:14,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:14,486 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:14,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:14 BoogieIcfgContainer [2020-09-25 07:51:14,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:14,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:14,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:14,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:14,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:51:11" (1/3) ... [2020-09-25 07:51:14,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:14, skipping insertion in model container [2020-09-25 07:51:14,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:51:12" (2/3) ... [2020-09-25 07:51:14,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:14, skipping insertion in model container [2020-09-25 07:51:14,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:14" (3/3) ... [2020-09-25 07:51:14,510 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label19.c [2020-09-25 07:51:14,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:14,534 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:14,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:14,594 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:14,594 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:14,595 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:14,595 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:14,595 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:14,595 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:14,595 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:14,595 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 07:51:14,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:14,652 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] [2020-09-25 07:51:14,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:14,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:14,661 INFO L82 PathProgramCache]: Analyzing trace with hash 628562263, now seen corresponding path program 1 times [2020-09-25 07:51:14,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:14,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 07:51:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 07:51:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:51:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:51:19,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:19,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:19,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:51:19,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:51:19,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:20,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:20,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:51:20,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:20,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:20,292 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 07:51:20,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 07:51:20,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:20,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:20,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914958094] [2020-09-25 07:51:20,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:20,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:20,328 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:22,504 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 07:51:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:22,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 07:51:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:22,538 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 07:51:22,538 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 07:51:22,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 07:51:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 07:51:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 07:51:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 07:51:22,680 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 114 [2020-09-25 07:51:22,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:22,681 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 07:51:22,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 07:51:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 07:51:22,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:22,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:22,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:22,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:22,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:22,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1104563352, now seen corresponding path program 1 times [2020-09-25 07:51:22,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:22,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611073180] [2020-09-25 07:51:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:25,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:51:25,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:51:25,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2600 [2020-09-25 07:51:25,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:25,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:25,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 07:51:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:51:25,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:25,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:25,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:25,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:25,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:25,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:25,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:51:25,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:25,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:25,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:25,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:25,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611073180] [2020-09-25 07:51:25,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:25,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:25,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807243717] [2020-09-25 07:51:25,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:25,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:25,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:25,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:25,675 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 07:51:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:27,781 INFO L93 Difference]: Finished difference Result 1654 states and 2024 transitions. [2020-09-25 07:51:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:27,782 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 07:51:27,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:27,789 INFO L225 Difference]: With dead ends: 1654 [2020-09-25 07:51:27,789 INFO L226 Difference]: Without dead ends: 1014 [2020-09-25 07:51:27,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:51:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-09-25 07:51:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 950. [2020-09-25 07:51:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 07:51:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1142 transitions. [2020-09-25 07:51:27,844 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1142 transitions. Word has length 135 [2020-09-25 07:51:27,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:27,845 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1142 transitions. [2020-09-25 07:51:27,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1142 transitions. [2020-09-25 07:51:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 07:51:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:27,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:51:27,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:27,852 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1460590075, now seen corresponding path program 1 times [2020-09-25 07:51:27,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:27,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065607278] [2020-09-25 07:51:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:27,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:27,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:28,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:30,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:32,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:51:32,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:51:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 07:51:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:32,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:32,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:51:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 07:51:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 07:51:33,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:51:33,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:33,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:33,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:33,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:33,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 07:51:33,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:33,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:33,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:51:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:33,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:33,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:51:33,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:51:33,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:51:33,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:33,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:33,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:33,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:51:33,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:51:33,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065607278] [2020-09-25 07:51:33,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:33,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:33,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479112306] [2020-09-25 07:51:33,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:33,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:33,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:33,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:33,239 INFO L87 Difference]: Start difference. First operand 950 states and 1142 transitions. Second operand 7 states. [2020-09-25 07:51:36,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:36,072 INFO L93 Difference]: Finished difference Result 3191 states and 4128 transitions. [2020-09-25 07:51:36,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:51:36,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 07:51:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:36,099 INFO L225 Difference]: With dead ends: 3191 [2020-09-25 07:51:36,100 INFO L226 Difference]: Without dead ends: 2265 [2020-09-25 07:51:36,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:36,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-09-25 07:51:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1938. [2020-09-25 07:51:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2020-09-25 07:51:36,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2428 transitions. [2020-09-25 07:51:36,220 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2428 transitions. Word has length 152 [2020-09-25 07:51:36,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:36,220 INFO L479 AbstractCegarLoop]: Abstraction has 1938 states and 2428 transitions. [2020-09-25 07:51:36,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2428 transitions. [2020-09-25 07:51:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:51:36,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:36,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:36,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:36,239 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:36,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1264932115, now seen corresponding path program 1 times [2020-09-25 07:51:36,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:36,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552191807] [2020-09-25 07:51:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:36,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:51:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:51:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:51:41,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:41,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 07:51:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:51:41,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:41,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:41,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:41,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:41,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:41,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:41,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:51:41,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:41,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:41,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:41,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:41,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:41,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 07:51:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:41,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:51:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 07:51:41,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552191807] [2020-09-25 07:51:41,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:41,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:41,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300713015] [2020-09-25 07:51:41,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:41,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:41,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:41,563 INFO L87 Difference]: Start difference. First operand 1938 states and 2428 transitions. Second operand 5 states. [2020-09-25 07:51:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:43,776 INFO L93 Difference]: Finished difference Result 5411 states and 6920 transitions. [2020-09-25 07:51:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:43,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 07:51:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:43,797 INFO L225 Difference]: With dead ends: 5411 [2020-09-25 07:51:43,797 INFO L226 Difference]: Without dead ends: 2219 [2020-09-25 07:51:43,815 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 07:51:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2020-09-25 07:51:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 1699. [2020-09-25 07:51:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-25 07:51:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2121 transitions. [2020-09-25 07:51:43,908 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2121 transitions. Word has length 166 [2020-09-25 07:51:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:43,908 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2121 transitions. [2020-09-25 07:51:43,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2121 transitions. [2020-09-25 07:51:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 07:51:43,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:43,919 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:43,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:43,919 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:43,920 INFO L82 PathProgramCache]: Analyzing trace with hash -513686346, now seen corresponding path program 1 times [2020-09-25 07:51:43,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:43,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141050662] [2020-09-25 07:51:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:44,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:45,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:48,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:48,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 07:51:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:51:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:51:48,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:48,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 07:51:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:51:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:49,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:49,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:49,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:49,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:49,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:49,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:49,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:49,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:49,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:51:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 07:51:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:51:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:49,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 07:51:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:49,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:49,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 07:51:49,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:49,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 07:51:49,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:51:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:49,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141050662] [2020-09-25 07:51:49,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:49,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:49,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341053363] [2020-09-25 07:51:49,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:49,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:49,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:49,471 INFO L87 Difference]: Start difference. First operand 1699 states and 2121 transitions. Second operand 7 states. [2020-09-25 07:51:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:51,826 INFO L93 Difference]: Finished difference Result 4321 states and 5485 transitions. [2020-09-25 07:51:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:51,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 07:51:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:51,843 INFO L225 Difference]: With dead ends: 4321 [2020-09-25 07:51:51,843 INFO L226 Difference]: Without dead ends: 2656 [2020-09-25 07:51:51,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:51:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2020-09-25 07:51:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2287. [2020-09-25 07:51:51,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-09-25 07:51:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2890 transitions. [2020-09-25 07:51:51,939 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2890 transitions. Word has length 222 [2020-09-25 07:51:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:51,940 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 2890 transitions. [2020-09-25 07:51:51,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2890 transitions. [2020-09-25 07:51:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 07:51:51,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:51,953 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 07:51:51,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:51,954 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:51,954 INFO L82 PathProgramCache]: Analyzing trace with hash -319020448, now seen corresponding path program 1 times [2020-09-25 07:51:51,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:51,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460684960] [2020-09-25 07:51:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:52,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:52,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:53,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:57,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 07:51:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 07:51:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:57,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:57,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:57,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:51:57,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:57,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:57,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:57,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:57,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:57,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:57,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:57,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:51:57,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:57,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:57,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:57,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:51:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:57,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-25 07:51:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:57,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:57,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:51:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 07:51:57,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460684960] [2020-09-25 07:51:57,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:57,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:57,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904487468] [2020-09-25 07:51:57,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:57,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:57,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:57,388 INFO L87 Difference]: Start difference. First operand 2287 states and 2890 transitions. Second operand 7 states. [2020-09-25 07:52:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:00,006 INFO L93 Difference]: Finished difference Result 4944 states and 6241 transitions. [2020-09-25 07:52:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:52:00,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-09-25 07:52:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:00,022 INFO L225 Difference]: With dead ends: 4944 [2020-09-25 07:52:00,022 INFO L226 Difference]: Without dead ends: 2691 [2020-09-25 07:52:00,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:52:00,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-09-25 07:52:00,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2639. [2020-09-25 07:52:00,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-09-25 07:52:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3173 transitions. [2020-09-25 07:52:00,098 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3173 transitions. Word has length 240 [2020-09-25 07:52:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:00,098 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3173 transitions. [2020-09-25 07:52:00,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:52:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3173 transitions. [2020-09-25 07:52:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-25 07:52:00,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:00,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:00,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:52:00,113 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:00,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:00,113 INFO L82 PathProgramCache]: Analyzing trace with hash 206654671, now seen corresponding path program 1 times [2020-09-25 07:52:00,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:00,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281364097] [2020-09-25 07:52:00,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:00,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:01,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking...