/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=NARROWEST --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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:08:15,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:08:15,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:08:15,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:08:15,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:08:15,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:08:15,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:08:15,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:08:15,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:08:15,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:08:15,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:08:15,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:08:15,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:08:15,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:08:15,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:08:15,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:08:15,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:08:15,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:08:15,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:08:15,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:08:15,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:08:15,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:08:16,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:08:16,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:08:16,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:08:16,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:08:16,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:08:16,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:08:16,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:08:16,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:08:16,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:08:16,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:08:16,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:08:16,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:08:16,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:08:16,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:08:16,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:08:16,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:08:16,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:08:16,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:08:16,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:08:16,024 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 02:08:16,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:08:16,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:08:16,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:08:16,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:08:16,076 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:08:16,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:08:16,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:08:16,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:08:16,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:08:16,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:08:16,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:08:16,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:08:16,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:08:16,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:08:16,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:08:16,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:08:16,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:08:16,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:08:16,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:08:16,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:08:16,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:08:16,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:08:16,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:08:16,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:08:16,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:08:16,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:08:16,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:08:16,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:08:16,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:08:16,082 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:08:16,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:08:16,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:08:16,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:08:16,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:08:16,531 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:08:16,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 02:08:16,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6395aa7/3f1732817b334d61aaa96ffc60476fb8/FLAG13ac0f493 [2020-09-25 02:08:17,273 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:08:17,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-25 02:08:17,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6395aa7/3f1732817b334d61aaa96ffc60476fb8/FLAG13ac0f493 [2020-09-25 02:08:17,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d6395aa7/3f1732817b334d61aaa96ffc60476fb8 [2020-09-25 02:08:17,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:08:17,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:08:17,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:08:17,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:08:17,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:08:17,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:08:17" (1/1) ... [2020-09-25 02:08:17,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:17, skipping insertion in model container [2020-09-25 02:08:17,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:08:17" (1/1) ... [2020-09-25 02:08:17,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:08:17,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:08:18,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:08:18,126 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:08:18,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:08:18,356 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:08:18,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18 WrapperNode [2020-09-25 02:08:18,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:08:18,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:08:18,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:08:18,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:08:18,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (1/1) ... [2020-09-25 02:08:18,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:08:18,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:08:18,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:08:18,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:08:18,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (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 02:08:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:08:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:08:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:08:18,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:08:18,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:08:18,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:08:19,823 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:08:19,823 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:08:19,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:08:19 BoogieIcfgContainer [2020-09-25 02:08:19,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:08:19,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:08:19,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:08:19,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:08:19,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:08:17" (1/3) ... [2020-09-25 02:08:19,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:08:19, skipping insertion in model container [2020-09-25 02:08:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:08:18" (2/3) ... [2020-09-25 02:08:19,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:08:19, skipping insertion in model container [2020-09-25 02:08:19,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:08:19" (3/3) ... [2020-09-25 02:08:19,842 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-25 02:08:19,853 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:08:19,864 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:08:19,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:08:19,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:08:19,920 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:08:19,920 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:08:19,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:08:19,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:08:19,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:08:19,921 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:08:19,921 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:08:19,952 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 02:08:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 02:08:19,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:19,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:19,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:19,984 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-25 02:08:19,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:19,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 02:08:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:20,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:23,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:25,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:25,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 02:08:25,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:08:25,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 02:08:25,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 02:08:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:08:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 02:08:25,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:08:25,922 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2020-09-25 02:08:26,216 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-09-25 02:08:26,397 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-09-25 02:08:26,566 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-09-25 02:08:26,690 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-09-25 02:08:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:27,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:08:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 02:08:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 02:08:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:27,739 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 02:08:27,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 02:08:27,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:27,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-25 02:08:27,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947955142] [2020-09-25 02:08:27,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 02:08:27,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:27,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 02:08:27,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2020-09-25 02:08:27,772 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 23 states. [2020-09-25 02:08:28,483 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 02:08:28,822 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 02:08:29,162 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 02:08:29,595 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:08:30,000 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 02:08:30,680 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-09-25 02:08:31,194 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2020-09-25 02:08:31,371 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-09-25 02:08:31,794 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-09-25 02:08:32,199 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-09-25 02:08:32,920 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 02:08:33,575 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-09-25 02:08:33,909 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-25 02:08:35,271 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-09-25 02:08:36,084 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 02:08:36,667 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 02:08:37,126 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:08:37,681 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 02:08:38,051 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-09-25 02:08:38,527 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-09-25 02:08:38,851 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2020-09-25 02:08:39,353 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-09-25 02:08:39,802 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-09-25 02:08:40,089 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2020-09-25 02:08:40,525 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2020-09-25 02:08:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:41,671 INFO L93 Difference]: Finished difference Result 1919 states and 2783 transitions. [2020-09-25 02:08:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-25 02:08:41,673 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 152 [2020-09-25 02:08:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:41,705 INFO L225 Difference]: With dead ends: 1919 [2020-09-25 02:08:41,705 INFO L226 Difference]: Without dead ends: 1300 [2020-09-25 02:08:41,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=1042, Invalid=2498, Unknown=0, NotChecked=0, Total=3540 [2020-09-25 02:08:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2020-09-25 02:08:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1046. [2020-09-25 02:08:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 02:08:41,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1213 transitions. [2020-09-25 02:08:41,843 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1213 transitions. Word has length 152 [2020-09-25 02:08:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1213 transitions. [2020-09-25 02:08:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 02:08:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1213 transitions. [2020-09-25 02:08:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 02:08:41,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:41,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:41,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:08:41,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1615076354, now seen corresponding path program 1 times [2020-09-25 02:08:41,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:41,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798719137] [2020-09-25 02:08:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:45,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:46,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:46,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:46,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 02:08:46,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:08:46,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 02:08:46,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:46,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 02:08:46,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 02:08:46,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:47,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:47,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:47,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:08:47,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 02:08:47,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:47,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:47,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:08:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:47,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:47,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 02:08:47,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:47,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 02:08:47,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:47,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:08:47,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:47,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798719137] [2020-09-25 02:08:47,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:47,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:08:47,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781297516] [2020-09-25 02:08:47,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:08:47,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:08:47,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:08:47,792 INFO L87 Difference]: Start difference. First operand 1046 states and 1213 transitions. Second operand 8 states. [2020-09-25 02:08:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:50,598 INFO L93 Difference]: Finished difference Result 2323 states and 2812 transitions. [2020-09-25 02:08:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:08:50,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-09-25 02:08:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:50,611 INFO L225 Difference]: With dead ends: 2323 [2020-09-25 02:08:50,611 INFO L226 Difference]: Without dead ends: 1041 [2020-09-25 02:08:50,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:08:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-09-25 02:08:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1034. [2020-09-25 02:08:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 02:08:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1186 transitions. [2020-09-25 02:08:50,667 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1186 transitions. Word has length 173 [2020-09-25 02:08:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:50,669 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1186 transitions. [2020-09-25 02:08:50,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:08:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1186 transitions. [2020-09-25 02:08:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 02:08:50,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:50,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:50,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:08:50,679 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:50,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:50,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2145718909, now seen corresponding path program 1 times [2020-09-25 02:08:50,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:50,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417021884] [2020-09-25 02:08:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:52,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:55,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:55,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 02:08:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:08:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 02:08:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 02:08:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:08:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:55,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:55,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:08:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:08:55,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:55,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:55,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:08:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:55,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:55,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:08:55,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:08:55,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:55,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:08:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 02:08:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:55,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:55,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 02:08:55,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:55,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 02:08:55,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:08:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:08:55,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:08:55,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:08:55,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417021884] [2020-09-25 02:08:55,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:55,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:08:55,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733613428] [2020-09-25 02:08:55,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:08:55,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:08:55,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:08:55,988 INFO L87 Difference]: Start difference. First operand 1034 states and 1186 transitions. Second operand 7 states. [2020-09-25 02:08:58,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:58,416 INFO L93 Difference]: Finished difference Result 2770 states and 3423 transitions. [2020-09-25 02:08:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:08:58,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-25 02:08:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:58,430 INFO L225 Difference]: With dead ends: 2770 [2020-09-25 02:08:58,430 INFO L226 Difference]: Without dead ends: 1760 [2020-09-25 02:08:58,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:08:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2020-09-25 02:08:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1541. [2020-09-25 02:08:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-09-25 02:08:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1785 transitions. [2020-09-25 02:08:58,503 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1785 transitions. Word has length 190 [2020-09-25 02:08:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:58,503 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1785 transitions. [2020-09-25 02:08:58,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:08:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1785 transitions. [2020-09-25 02:08:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 02:08:58,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:58,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:58,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:08:58,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:58,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1829658404, now seen corresponding path program 1 times [2020-09-25 02:08:58,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:58,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712464115] [2020-09-25 02:08:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:03,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:03,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 02:09:03,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:09:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 02:09:03,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:09:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 02:09:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:09:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:09:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:03,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 02:09:03,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:09:03,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:09:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:09:03,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:09:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 02:09:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:03,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:03,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:09:03,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:09:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:09:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:09:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 02:09:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 02:09:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:03,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:03,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:09:03,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:09:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:09:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 02:09:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:09:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:09:03,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:09:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 02:09:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:09:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:09:03,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712464115] [2020-09-25 02:09:03,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:09:03,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:09:03,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437173781] [2020-09-25 02:09:03,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:09:03,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:09:03,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:09:03,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:09:03,837 INFO L87 Difference]: Start difference. First operand 1541 states and 1785 transitions. Second operand 7 states. [2020-09-25 02:09:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:09:06,138 INFO L93 Difference]: Finished difference Result 3997 states and 4777 transitions. [2020-09-25 02:09:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:09:06,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 02:09:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:09:06,151 INFO L225 Difference]: With dead ends: 3997 [2020-09-25 02:09:06,152 INFO L226 Difference]: Without dead ends: 2480 [2020-09-25 02:09:06,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:09:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-09-25 02:09:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2279. [2020-09-25 02:09:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-09-25 02:09:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 2724 transitions. [2020-09-25 02:09:06,222 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 2724 transitions. Word has length 195 [2020-09-25 02:09:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:09:06,222 INFO L479 AbstractCegarLoop]: Abstraction has 2279 states and 2724 transitions. [2020-09-25 02:09:06,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:09:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 2724 transitions. [2020-09-25 02:09:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 02:09:06,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:09:06,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:06,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:09:06,233 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:09:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:09:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1076152859, now seen corresponding path program 1 times [2020-09-25 02:09:06,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:09:06,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582368933] [2020-09-25 02:09:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:09:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:09:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:09:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking...