/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=LOWLEXORDER --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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:39:18,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:39:18,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:39:18,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:39:18,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:39:18,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:39:18,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:39:18,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:39:18,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:39:18,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:39:18,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:39:18,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:39:18,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:39:18,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:39:18,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:39:18,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:39:18,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:39:18,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:39:18,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:39:18,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:39:18,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:39:18,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:39:18,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:39:18,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:39:18,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:39:18,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:39:18,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:39:18,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:39:18,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:39:18,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:39:18,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:39:18,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:39:18,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:39:18,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:39:18,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:39:18,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:39:18,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:39:18,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:39:18,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:39:18,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:39:18,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:39:18,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:39:19,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:39:19,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:39:19,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:39:19,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:39:19,026 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:39:19,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:39:19,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:39:19,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:39:19,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:39:19,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:39:19,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:39:19,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:39:19,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:39:19,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:39:19,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:39:19,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:39:19,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:39:19,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:39:19,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:39:19,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:39:19,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:39:19,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:19,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:39:19,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:39:19,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:39:19,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:39:19,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:39:19,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:39:19,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:39:19,031 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:39:19,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:39:19,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:39:19,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:39:19,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:39:19,544 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:39:19,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-24 21:39:19,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b71bfc5da/87a57ed68c0f43faa553dfb0ac04ef7b/FLAG84488cb8c [2020-09-24 21:39:20,301 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:39:20,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-09-24 21:39:20,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b71bfc5da/87a57ed68c0f43faa553dfb0ac04ef7b/FLAG84488cb8c [2020-09-24 21:39:20,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b71bfc5da/87a57ed68c0f43faa553dfb0ac04ef7b [2020-09-24 21:39:20,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:39:20,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:39:20,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:20,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:39:20,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:39:20,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:20" (1/1) ... [2020-09-24 21:39:20,555 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 24.09 09:39:20, skipping insertion in model container [2020-09-24 21:39:20,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:39:20" (1/1) ... [2020-09-24 21:39:20,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:39:20,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:39:21,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:21,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:39:21,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:39:21,415 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:39:21,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21 WrapperNode [2020-09-24 21:39:21,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:39:21,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:39:21,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:39:21,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:39:21,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... [2020-09-24 21:39:21,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:39:21,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:39:21,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:39:21,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:39:21,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:39:21,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:39:21,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:39:21,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:39:21,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:39:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:39:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:39:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:39:21,651 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:39:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:39:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:39:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:39:23,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:39:23,025 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:39:23,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:23 BoogieIcfgContainer [2020-09-24 21:39:23,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:39:23,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:39:23,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:39:23,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:39:23,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:39:20" (1/3) ... [2020-09-24 21:39:23,042 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 24.09 09:39:23, skipping insertion in model container [2020-09-24 21:39:23,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:39:21" (2/3) ... [2020-09-24 21:39:23,042 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 24.09 09:39:23, skipping insertion in model container [2020-09-24 21:39:23,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:39:23" (3/3) ... [2020-09-24 21:39:23,045 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-09-24 21:39:23,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:39:23,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:39:23,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:39:23,131 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:39:23,131 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:39:23,131 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:39:23,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:39:23,132 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:39:23,132 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:39:23,132 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:39:23,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:39:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:39:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 21:39:23,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:23,190 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] [2020-09-24 21:39:23,190 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1760559547, now seen corresponding path program 1 times [2020-09-24 21:39:23,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:23,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-24 21:39:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:24,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:28,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:28,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 21:39:28,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:39:28,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 21:39:28,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:28,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:39:29,318 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-24 21:39:29,492 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-09-24 21:39:29,639 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-09-24 21:39:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:30,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:30,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:30,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:30,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 21:39:30,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:30,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:30,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:30,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:30,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-24 21:39:30,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:30,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:30,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486047639] [2020-09-24 21:39:30,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:30,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:30,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:30,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:30,552 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:30,977 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 21:39:31,268 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-24 21:39:31,594 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 99 [2020-09-24 21:39:31,888 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-09-24 21:39:32,417 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 93 [2020-09-24 21:39:33,270 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2020-09-24 21:39:33,782 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-24 21:39:37,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:37,553 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:39:37,555 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 131 [2020-09-24 21:39:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:37,584 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:37,584 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:37,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:39:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:39:37,739 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 131 [2020-09-24 21:39:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:37,742 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:39:37,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:39:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:39:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 21:39:37,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:37,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:39:37,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:37,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:37,755 INFO L82 PathProgramCache]: Analyzing trace with hash -293959622, now seen corresponding path program 1 times [2020-09-24 21:39:37,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:37,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625138526] [2020-09-24 21:39:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:42,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:42,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 21:39:42,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:39:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 21:39:42,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:39:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:39:42,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:39:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:43,492 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-09-24 21:39:43,665 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-09-24 21:39:43,900 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 53 [2020-09-24 21:39:44,147 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 50 [2020-09-24 21:39:44,393 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 46 [2020-09-24 21:39:44,650 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 42 [2020-09-24 21:39:44,843 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2020-09-24 21:39:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:44,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:44,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 21:39:44,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:45,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:45,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 21:39:45,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:45,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:39:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:39:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:45,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:45,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:45,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 21:39:45,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:45,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:45,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:45,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:39:46,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625138526] [2020-09-24 21:39:46,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:46,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:39:46,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094162616] [2020-09-24 21:39:46,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:39:46,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:46,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:39:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:39:46,033 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 23 states. [2020-09-24 21:39:46,590 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-09-24 21:39:47,957 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-09-24 21:39:50,497 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 96 [2020-09-24 21:39:50,911 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 94 [2020-09-24 21:39:51,807 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 93 [2020-09-24 21:39:52,295 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 91 [2020-09-24 21:39:52,620 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-09-24 21:39:53,149 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2020-09-24 21:39:53,476 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-09-24 21:39:53,930 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2020-09-24 21:39:54,962 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 112 [2020-09-24 21:39:56,157 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2020-09-24 21:39:56,634 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 109 [2020-09-24 21:39:56,968 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2020-09-24 21:39:57,940 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 106 [2020-09-24 21:39:58,189 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-09-24 21:39:58,564 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-09-24 21:39:58,979 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 103 [2020-09-24 21:40:00,177 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 98 [2020-09-24 21:40:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:01,336 INFO L93 Difference]: Finished difference Result 3608 states and 4572 transitions. [2020-09-24 21:40:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 21:40:01,338 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 169 [2020-09-24 21:40:01,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:01,354 INFO L225 Difference]: With dead ends: 3608 [2020-09-24 21:40:01,355 INFO L226 Difference]: Without dead ends: 2711 [2020-09-24 21:40:01,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=912, Invalid=2510, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 21:40:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2020-09-24 21:40:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2014. [2020-09-24 21:40:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2014 states. [2020-09-24 21:40:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2368 transitions. [2020-09-24 21:40:01,443 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2368 transitions. Word has length 169 [2020-09-24 21:40:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:01,444 INFO L479 AbstractCegarLoop]: Abstraction has 2014 states and 2368 transitions. [2020-09-24 21:40:01,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:40:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2368 transitions. [2020-09-24 21:40:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 21:40:01,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:01,453 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-24 21:40:01,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:40:01,453 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:01,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1418870292, now seen corresponding path program 1 times [2020-09-24 21:40:01,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:01,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524737463] [2020-09-24 21:40:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 21:40:06,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:40:06,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:40:06,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:40:06,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:40:06,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:40:06,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:40:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:40:06,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:06,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:40:06,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:40:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:40:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:40:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:06,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:40:06,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 21:40:06,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:06,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:06,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:06,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:40:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:06,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:40:06,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:40:06,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:40:06,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 21:40:06,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:40:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:40:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:40:06,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:40:06,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:40:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 21:40:06,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524737463] [2020-09-24 21:40:06,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:40:06,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:40:06,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430712423] [2020-09-24 21:40:06,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:40:06,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:40:06,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:40:06,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:40:06,805 INFO L87 Difference]: Start difference. First operand 2014 states and 2368 transitions. Second operand 7 states. [2020-09-24 21:40:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:40:09,234 INFO L93 Difference]: Finished difference Result 5008 states and 6182 transitions. [2020-09-24 21:40:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:40:09,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-24 21:40:09,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:40:09,255 INFO L225 Difference]: With dead ends: 5008 [2020-09-24 21:40:09,255 INFO L226 Difference]: Without dead ends: 3082 [2020-09-24 21:40:09,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:40:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2020-09-24 21:40:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 2986. [2020-09-24 21:40:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2986 states. [2020-09-24 21:40:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 3577 transitions. [2020-09-24 21:40:09,367 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 3577 transitions. Word has length 173 [2020-09-24 21:40:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:40:09,368 INFO L479 AbstractCegarLoop]: Abstraction has 2986 states and 3577 transitions. [2020-09-24 21:40:09,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:40:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 3577 transitions. [2020-09-24 21:40:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 21:40:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:40:09,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:40:09,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:40:09,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:40:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:40:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 727992105, now seen corresponding path program 1 times [2020-09-24 21:40:09,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:40:09,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493470400] [2020-09-24 21:40:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:40:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:40:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:40:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking...