/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:17,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:17,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:17,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:17,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:17,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:17,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:17,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:17,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:17,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:17,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:17,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:17,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:17,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:17,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:17,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:17,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:17,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:17,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:17,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:17,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:17,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:17,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:17,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:17,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:17,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:17,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:17,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:17,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:17,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:17,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:17,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:17,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:17,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:17,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:17,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:17,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:17,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:17,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:17,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:17,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:17,526 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 13:34:17,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:17,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:17,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:17,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:17,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:17,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:17,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:17,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:17,554 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:17,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:17,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:17,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:17,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:17,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:17,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:17,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:17,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:17,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:17,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:17,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:17,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:17,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:17,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:17,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:17,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:34:18,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:18,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:18,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:18,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:18,097 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:18,098 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 13:34:18,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894a4743c/b93d19af63844de2b9b6ab6335c8d5f3/FLAG708837c0a [2020-09-25 13:34:18,847 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:18,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 13:34:18,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894a4743c/b93d19af63844de2b9b6ab6335c8d5f3/FLAG708837c0a [2020-09-25 13:34:19,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/894a4743c/b93d19af63844de2b9b6ab6335c8d5f3 [2020-09-25 13:34:19,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:19,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:19,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:19,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:19,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:19,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:19,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19, skipping insertion in model container [2020-09-25 13:34:19,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:19,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:19,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:19,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:19,657 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:19,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:19,950 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:19,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19 WrapperNode [2020-09-25 13:34:19,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:19,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:19,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:19,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:19,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:19,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:19,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:19,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:20,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:20,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:20,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (1/1) ... [2020-09-25 13:34:20,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:20,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:20,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:20,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:20,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (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 13:34:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:20,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:21,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:21,680 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:21,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:21 BoogieIcfgContainer [2020-09-25 13:34:21,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:21,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:21,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:21,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:21,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:19" (1/3) ... [2020-09-25 13:34:21,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:21, skipping insertion in model container [2020-09-25 13:34:21,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:19" (2/3) ... [2020-09-25 13:34:21,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:21, skipping insertion in model container [2020-09-25 13:34:21,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:21" (3/3) ... [2020-09-25 13:34:21,712 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 13:34:21,725 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:21,740 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:21,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:21,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:21,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:21,811 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:21,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:21,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:21,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:21,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:21,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 13:34:21,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:21,869 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] [2020-09-25 13:34:21,869 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:21,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 13:34:21,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:21,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:34:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:34:22,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:22,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-25 13:34:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:22,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:34:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:34:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:22,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:22,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:22,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:34:22,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:22,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:22,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:22,680 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 13:34:22,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 13:34:22,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:22,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:22,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811767820] [2020-09-25 13:34:22,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:22,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:22,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:22,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:22,716 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:24,792 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:34:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:24,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 13:34:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:24,819 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:34:24,819 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:34:24,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:34:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:34:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:34:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:34:24,937 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 13:34:24,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:24,937 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:34:24,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:34:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 13:34:24,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:24,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:24,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:24,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:24,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 13:34:24,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:24,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642854311] [2020-09-25 13:34:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:25,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 13:34:26,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:34:26,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1796 [2020-09-25 13:34:26,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:26,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:26,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:26,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:26,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:26,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:34:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:27,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642854311] [2020-09-25 13:34:27,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:27,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:27,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082319365] [2020-09-25 13:34:27,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:27,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:27,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:27,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:27,198 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 13:34:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:29,675 INFO L93 Difference]: Finished difference Result 1423 states and 1832 transitions. [2020-09-25 13:34:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:34:29,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 13:34:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:29,683 INFO L225 Difference]: With dead ends: 1423 [2020-09-25 13:34:29,684 INFO L226 Difference]: Without dead ends: 895 [2020-09-25 13:34:29,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:34:29,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-09-25 13:34:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 857. [2020-09-25 13:34:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-25 13:34:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1029 transitions. [2020-09-25 13:34:29,735 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1029 transitions. Word has length 127 [2020-09-25 13:34:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:29,735 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1029 transitions. [2020-09-25 13:34:29,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1029 transitions. [2020-09-25 13:34:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:34:29,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:29,739 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:29,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:29,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 13:34:29,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:29,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179939657] [2020-09-25 13:34:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 13:34:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4989 [2020-09-25 13:34:34,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:34:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:34,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:34,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:34:34,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:35,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:35,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:34:35,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:35,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:35,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179939657] [2020-09-25 13:34:35,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:35,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:35,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179391925] [2020-09-25 13:34:35,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:35,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:35,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:35,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:35,225 INFO L87 Difference]: Start difference. First operand 857 states and 1029 transitions. Second operand 8 states. [2020-09-25 13:34:38,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:38,419 INFO L93 Difference]: Finished difference Result 2954 states and 3752 transitions. [2020-09-25 13:34:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:38,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-09-25 13:34:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:38,442 INFO L225 Difference]: With dead ends: 2954 [2020-09-25 13:34:38,442 INFO L226 Difference]: Without dead ends: 2112 [2020-09-25 13:34:38,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:34:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-09-25 13:34:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 1995. [2020-09-25 13:34:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-09-25 13:34:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2472 transitions. [2020-09-25 13:34:38,571 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2472 transitions. Word has length 136 [2020-09-25 13:34:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:38,572 INFO L479 AbstractCegarLoop]: Abstraction has 1995 states and 2472 transitions. [2020-09-25 13:34:38,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2472 transitions. [2020-09-25 13:34:38,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 13:34:38,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:38,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:38,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:38,593 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash 350854071, now seen corresponding path program 1 times [2020-09-25 13:34:38,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:38,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267594056] [2020-09-25 13:34:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:38,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:43,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 13:34:43,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:34:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:43,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 13:34:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:43,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:43,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:43,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:43,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:43,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:43,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:43,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:44,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 13:34:44,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 13:34:44,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:44,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:44,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:34:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:44,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267594056] [2020-09-25 13:34:44,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:44,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:44,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199649564] [2020-09-25 13:34:44,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:44,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:44,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:44,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:44,222 INFO L87 Difference]: Start difference. First operand 1995 states and 2472 transitions. Second operand 7 states. [2020-09-25 13:34:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:46,215 INFO L93 Difference]: Finished difference Result 4146 states and 5144 transitions. [2020-09-25 13:34:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:34:46,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-25 13:34:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:46,237 INFO L225 Difference]: With dead ends: 4146 [2020-09-25 13:34:46,237 INFO L226 Difference]: Without dead ends: 2166 [2020-09-25 13:34:46,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-09-25 13:34:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2153. [2020-09-25 13:34:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 13:34:46,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2655 transitions. [2020-09-25 13:34:46,319 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2655 transitions. Word has length 174 [2020-09-25 13:34:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:46,321 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2655 transitions. [2020-09-25 13:34:46,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2655 transitions. [2020-09-25 13:34:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 13:34:46,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:46,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:46,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:46,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:46,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1483242834, now seen corresponding path program 1 times [2020-09-25 13:34:46,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:46,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595199000] [2020-09-25 13:34:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:46,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4504 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-25 13:34:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:50,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:50,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:50,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:34:50,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:50,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:50,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:50,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:50,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:50,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:51,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:51,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:51,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:34:51,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:51,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:51,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:51,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:51,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:51,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 13:34:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:51,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 67 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:51,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595199000] [2020-09-25 13:34:51,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:51,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:51,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922018464] [2020-09-25 13:34:51,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:51,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:51,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:51,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:51,421 INFO L87 Difference]: Start difference. First operand 2153 states and 2655 transitions. Second operand 10 states. [2020-09-25 13:34:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:54,714 INFO L93 Difference]: Finished difference Result 4568 states and 5736 transitions. [2020-09-25 13:34:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:54,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 206 [2020-09-25 13:34:54,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:54,730 INFO L225 Difference]: With dead ends: 4568 [2020-09-25 13:34:54,730 INFO L226 Difference]: Without dead ends: 2580 [2020-09-25 13:34:54,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:34:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-09-25 13:34:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2531. [2020-09-25 13:34:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2531 states. [2020-09-25 13:34:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3107 transitions. [2020-09-25 13:34:54,813 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3107 transitions. Word has length 206 [2020-09-25 13:34:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:54,814 INFO L479 AbstractCegarLoop]: Abstraction has 2531 states and 3107 transitions. [2020-09-25 13:34:54,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:34:54,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3107 transitions. [2020-09-25 13:34:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:34:54,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:54,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:54,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:54,819 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 13:34:54,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:54,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891459647] [2020-09-25 13:34:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:59,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 13:34:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:34:59,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:59,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:34:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 13:34:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:59,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:59,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:59,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:59,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:59,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:00,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:00,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:00,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:35:00,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:00,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:00,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:35:00,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:00,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:00,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:00,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:00,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 131 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:00,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891459647] [2020-09-25 13:35:00,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:00,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:35:00,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174940909] [2020-09-25 13:35:00,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:35:00,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:00,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:35:00,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:00,668 INFO L87 Difference]: Start difference. First operand 2531 states and 3107 transitions. Second operand 11 states. [2020-09-25 13:35:05,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:05,184 INFO L93 Difference]: Finished difference Result 5401 states and 6853 transitions. [2020-09-25 13:35:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:35:05,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 219 [2020-09-25 13:35:05,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:05,203 INFO L225 Difference]: With dead ends: 5401 [2020-09-25 13:35:05,203 INFO L226 Difference]: Without dead ends: 3040 [2020-09-25 13:35:05,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:35:05,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2020-09-25 13:35:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2878. [2020-09-25 13:35:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2020-09-25 13:35:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 3515 transitions. [2020-09-25 13:35:05,307 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 3515 transitions. Word has length 219 [2020-09-25 13:35:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:05,308 INFO L479 AbstractCegarLoop]: Abstraction has 2878 states and 3515 transitions. [2020-09-25 13:35:05,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:35:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 3515 transitions. [2020-09-25 13:35:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 13:35:05,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:05,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:05,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:35:05,313 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:05,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2022070061, now seen corresponding path program 1 times [2020-09-25 13:35:05,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:05,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382752850] [2020-09-25 13:35:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:05,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking...