/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=0.2 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:30,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:30,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:30,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:30,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:30,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:30,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:30,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:30,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:30,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:30,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:30,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:30,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:30,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:30,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:30,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:30,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:30,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:30,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:30,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:30,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:30,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:30,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:30,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:30,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:30,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:30,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:30,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:30,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:30,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:30,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:30,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:30,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:30,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:30,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:30,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:30,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:30,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:30,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:30,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:30,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:30,474 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 11:13:30,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:30,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:30,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:30,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:30,502 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:30,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:30,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:30,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:30,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:30,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:30,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:30,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:30,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:30,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:30,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:30,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:30,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:30,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:30,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:30,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:30,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:30,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:30,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:30,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:30,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:30,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:30,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:30,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:30,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:30,507 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:13:30,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:31,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:31,017 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:31,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:31,020 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:31,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 11:13:31,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/325e35465/ec7e47f834c14b689ec34211a38a8262/FLAG1504783c3 [2020-09-25 11:13:31,717 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:31,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 11:13:31,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/325e35465/ec7e47f834c14b689ec34211a38a8262/FLAG1504783c3 [2020-09-25 11:13:31,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/325e35465/ec7e47f834c14b689ec34211a38a8262 [2020-09-25 11:13:31,976 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:31,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:31,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:31,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:31,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:31,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:31" (1/1) ... [2020-09-25 11:13:31,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:31, skipping insertion in model container [2020-09-25 11:13:31,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:31" (1/1) ... [2020-09-25 11:13:32,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:32,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:32,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:32,571 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:32,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:32,835 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:32,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32 WrapperNode [2020-09-25 11:13:32,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:32,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:32,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:32,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:32,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (1/1) ... [2020-09-25 11:13:32,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:32,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:32,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:32,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:32,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (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 11:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:33,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:33,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:34,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:34,408 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:34,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:34 BoogieIcfgContainer [2020-09-25 11:13:34,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:34,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:34,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:34,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:34,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:31" (1/3) ... [2020-09-25 11:13:34,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:34, skipping insertion in model container [2020-09-25 11:13:34,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:32" (2/3) ... [2020-09-25 11:13:34,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:34, skipping insertion in model container [2020-09-25 11:13:34,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:34" (3/3) ... [2020-09-25 11:13:34,439 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-25 11:13:34,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:34,464 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:34,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:34,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:34,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:34,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:34,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:34,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:34,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:34,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:34,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:13:34,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:34,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:34,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-25 11:13:34,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:34,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 11:13:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:40,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 11:13:40,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:40,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:13:40,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:40,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:40,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:13:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:13:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:13:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:40,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:40,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 11:13:40,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:40,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:40,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:13:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:40,356 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 11:13:40,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 11:13:40,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:40,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:13:40,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421957325] [2020-09-25 11:13:40,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:40,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:40,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:40,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:40,391 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 11:13:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:42,557 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 11:13:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:42,560 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 11:13:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:42,598 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 11:13:42,599 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 11:13:42,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:42,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 11:13:42,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 11:13:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:13:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 11:13:42,738 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 137 [2020-09-25 11:13:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:42,741 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 11:13:42,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 11:13:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 11:13:42,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:42,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:42,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:42,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1946630892, now seen corresponding path program 1 times [2020-09-25 11:13:42,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:42,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932887301] [2020-09-25 11:13:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 11:13:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:13:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-09-25 11:13:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:47,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 11:13:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:13:47,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:13:48,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:48,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:13:48,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:48,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932887301] [2020-09-25 11:13:48,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:48,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:13:48,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200325650] [2020-09-25 11:13:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:13:48,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:13:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:13:48,115 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 11:13:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:50,257 INFO L93 Difference]: Finished difference Result 1503 states and 1888 transitions. [2020-09-25 11:13:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:13:50,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 11:13:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:50,266 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 11:13:50,266 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 11:13:50,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 11:13:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 748. [2020-09-25 11:13:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 11:13:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 11:13:50,316 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 158 [2020-09-25 11:13:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:50,317 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 11:13:50,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:13:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 11:13:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 11:13:50,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:50,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:50,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:50,325 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:50,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:50,331 INFO L82 PathProgramCache]: Analyzing trace with hash -464697292, now seen corresponding path program 1 times [2020-09-25 11:13:50,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:50,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977393576] [2020-09-25 11:13:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 11:13:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:13:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:13:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 11:13:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 11:13:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:55,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:55,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:55,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:55,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:13:55,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:55,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 11:13:55,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:55,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:13:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:55,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977393576] [2020-09-25 11:13:55,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:55,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:13:55,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556823038] [2020-09-25 11:13:55,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:13:55,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:55,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:13:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:13:55,711 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 6 states. [2020-09-25 11:13:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:58,389 INFO L93 Difference]: Finished difference Result 2400 states and 3005 transitions. [2020-09-25 11:13:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:13:58,389 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 11:13:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:58,400 INFO L225 Difference]: With dead ends: 2400 [2020-09-25 11:13:58,400 INFO L226 Difference]: Without dead ends: 1676 [2020-09-25 11:13:58,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:13:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2020-09-25 11:13:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1332. [2020-09-25 11:13:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1332 states. [2020-09-25 11:13:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1638 transitions. [2020-09-25 11:13:58,461 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1638 transitions. Word has length 167 [2020-09-25 11:13:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:58,461 INFO L479 AbstractCegarLoop]: Abstraction has 1332 states and 1638 transitions. [2020-09-25 11:13:58,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:13:58,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1638 transitions. [2020-09-25 11:13:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 11:13:58,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:58,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:58,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:58,470 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:58,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1879775890, now seen corresponding path program 1 times [2020-09-25 11:13:58,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:58,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856867604] [2020-09-25 11:13:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:59,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:03,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:03,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 11:14:03,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:14:03,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 11:14:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:03,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:14:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 11:14:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 11:14:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:04,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:04,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:04,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:04,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:04,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:04,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:04,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:04,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:04,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:04,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:04,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:14:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 11:14:04,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:04,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:04,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:14:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:04,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856867604] [2020-09-25 11:14:04,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:04,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:14:04,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022678404] [2020-09-25 11:14:04,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:14:04,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:04,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:14:04,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:14:04,305 INFO L87 Difference]: Start difference. First operand 1332 states and 1638 transitions. Second operand 15 states. [2020-09-25 11:14:05,823 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 11:14:07,715 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 11:14:08,083 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 11:14:08,393 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 11:14:11,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:11,022 INFO L93 Difference]: Finished difference Result 3358 states and 4304 transitions. [2020-09-25 11:14:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 11:14:11,023 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 172 [2020-09-25 11:14:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:11,042 INFO L225 Difference]: With dead ends: 3358 [2020-09-25 11:14:11,042 INFO L226 Difference]: Without dead ends: 2050 [2020-09-25 11:14:11,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=332, Invalid=660, Unknown=0, NotChecked=0, Total=992 [2020-09-25 11:14:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-09-25 11:14:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1980. [2020-09-25 11:14:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-09-25 11:14:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2415 transitions. [2020-09-25 11:14:11,129 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2415 transitions. Word has length 172 [2020-09-25 11:14:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:11,129 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 2415 transitions. [2020-09-25 11:14:11,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:14:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2415 transitions. [2020-09-25 11:14:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 11:14:11,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:11,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:11,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:11,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 853786687, now seen corresponding path program 1 times [2020-09-25 11:14:11,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:11,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519558844] [2020-09-25 11:14:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:16,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 11:14:16,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:14:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 11:14:16,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:16,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:16,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:14:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:14:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:16,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:14:16,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:16,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:16,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 11:14:16,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:16,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 11:14:16,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:16,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:16,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:14:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:16,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519558844] [2020-09-25 11:14:16,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:16,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:16,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242043212] [2020-09-25 11:14:16,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:16,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:16,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:16,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:16,527 INFO L87 Difference]: Start difference. First operand 1980 states and 2415 transitions. Second operand 5 states. [2020-09-25 11:14:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:18,761 INFO L93 Difference]: Finished difference Result 5413 states and 6767 transitions. [2020-09-25 11:14:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:18,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-25 11:14:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:18,781 INFO L225 Difference]: With dead ends: 5413 [2020-09-25 11:14:18,781 INFO L226 Difference]: Without dead ends: 3457 [2020-09-25 11:14:18,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:18,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2020-09-25 11:14:18,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3154. [2020-09-25 11:14:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-09-25 11:14:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3911 transitions. [2020-09-25 11:14:18,892 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3911 transitions. Word has length 186 [2020-09-25 11:14:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:18,893 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 3911 transitions. [2020-09-25 11:14:18,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3911 transitions. [2020-09-25 11:14:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 11:14:18,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:18,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:18,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:14:18,910 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:18,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2051098856, now seen corresponding path program 1 times [2020-09-25 11:14:18,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:18,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844676100] [2020-09-25 11:14:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:18,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:19,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:19,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking...