/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/Problem01_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:39,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:39,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:39,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:39,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:39,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:39,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:39,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:39,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:39,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:39,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:39,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:39,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:39,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:39,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:39,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:39,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:39,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:39,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:39,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:39,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:39,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:39,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:39,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:39,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:39,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:39,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:39,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:39,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:39,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:39,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:39,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:39,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:39,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:39,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:39,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:39,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:39,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:39,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:39,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:39,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:39,432 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 13:29:39,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:39,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:39,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:39,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:39,460 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:39,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:39,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:39,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:39,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:39,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:39,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:39,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:39,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:39,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:39,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:39,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:39,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:39,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:39,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:39,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:39,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:39,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:39,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:39,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:39,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:39,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:39,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:39,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:39,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:39,465 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 13:29:39,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:39,937 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:39,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:39,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:39,944 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:39,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 13:29:40,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f575add2/5907f3d34c194c06b63de381be7c6c2f/FLAGfcf4765f3 [2020-09-25 13:29:40,655 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:40,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 13:29:40,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f575add2/5907f3d34c194c06b63de381be7c6c2f/FLAGfcf4765f3 [2020-09-25 13:29:40,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f575add2/5907f3d34c194c06b63de381be7c6c2f [2020-09-25 13:29:40,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:40,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:40,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:40,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:40,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:40,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:40" (1/1) ... [2020-09-25 13:29:40,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:40, skipping insertion in model container [2020-09-25 13:29:40,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:40" (1/1) ... [2020-09-25 13:29:40,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:41,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:41,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:41,549 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:41,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:41,677 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:41,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41 WrapperNode [2020-09-25 13:29:41,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:41,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:41,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:41,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:41,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (1/1) ... [2020-09-25 13:29:41,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:41,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:41,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:41,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:41,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (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 13:29:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:41,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:41,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:41,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:43,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:43,275 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:43,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:43 BoogieIcfgContainer [2020-09-25 13:29:43,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:43,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:43,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:43,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:43,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:40" (1/3) ... [2020-09-25 13:29:43,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:43, skipping insertion in model container [2020-09-25 13:29:43,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:41" (2/3) ... [2020-09-25 13:29:43,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:43, skipping insertion in model container [2020-09-25 13:29:43,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:43" (3/3) ... [2020-09-25 13:29:43,306 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-25 13:29:43,320 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:43,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:43,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:43,407 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:43,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:43,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:43,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:43,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:43,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:43,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:43,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 13:29:43,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:43,493 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] [2020-09-25 13:29:43,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:43,502 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-25 13:29:43,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:43,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959780883] [2020-09-25 13:29:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:44,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 13:29:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:29:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:29:48,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:29:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:29:48,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:49,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:49,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:49,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:49,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 13:29:49,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:49,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:49,139 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 13:29:49,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959780883] [2020-09-25 13:29:49,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:49,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:49,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746122966] [2020-09-25 13:29:49,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:49,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:49,172 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:51,201 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 13:29:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:51,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-25 13:29:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:51,247 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 13:29:51,247 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 13:29:51,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 13:29:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 13:29:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 13:29:51,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 13:29:51,417 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 113 [2020-09-25 13:29:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:51,418 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 13:29:51,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:51,419 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 13:29:51,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 13:29:51,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:51,424 INFO L422 BasicCegarLoop]: trace histogram [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 13:29:51,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:51,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:51,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1544605760, now seen corresponding path program 1 times [2020-09-25 13:29:51,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:51,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238303190] [2020-09-25 13:29:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:54,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:56,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 13:29:56,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:29:56,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:29:56,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:56,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:29:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 13:29:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:56,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:29:56,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:56,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:56,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:29:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:29:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:56,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:29:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:56,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238303190] [2020-09-25 13:29:56,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:56,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:56,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030573232] [2020-09-25 13:29:56,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:56,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:56,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:56,752 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 13:29:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:58,656 INFO L93 Difference]: Finished difference Result 1524 states and 1875 transitions. [2020-09-25 13:29:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:58,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-09-25 13:29:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:58,668 INFO L225 Difference]: With dead ends: 1524 [2020-09-25 13:29:58,668 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 13:29:58,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 13:29:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 891. [2020-09-25 13:29:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:29:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1072 transitions. [2020-09-25 13:29:58,703 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1072 transitions. Word has length 130 [2020-09-25 13:29:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:58,704 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1072 transitions. [2020-09-25 13:29:58,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1072 transitions. [2020-09-25 13:29:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 13:29:58,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:58,708 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:29:58,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:58,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:58,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:58,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1859994479, now seen corresponding path program 1 times [2020-09-25 13:29:58,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:58,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561917283] [2020-09-25 13:29:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:03,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 13:30:03,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:30:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-09-25 13:30:03,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:03,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:30:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:30:03,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:30:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:04,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:04,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:04,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:04,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:04,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:30:04,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:04,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:04,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:04,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:04,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:30:04,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:04,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 13:30:04,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:04,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:04,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:04,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:30:04,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:05,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561917283] [2020-09-25 13:30:05,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:05,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:30:05,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8788085] [2020-09-25 13:30:05,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:30:05,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:05,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:30:05,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:30:05,205 INFO L87 Difference]: Start difference. First operand 891 states and 1072 transitions. Second operand 19 states. [2020-09-25 13:30:05,404 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-09-25 13:30:06,076 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 13:30:06,481 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-09-25 13:30:06,850 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-09-25 13:30:07,227 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2020-09-25 13:30:08,337 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2020-09-25 13:30:09,582 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2020-09-25 13:30:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:11,859 INFO L93 Difference]: Finished difference Result 2208 states and 2810 transitions. [2020-09-25 13:30:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 13:30:11,859 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 135 [2020-09-25 13:30:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:11,868 INFO L225 Difference]: With dead ends: 2208 [2020-09-25 13:30:11,868 INFO L226 Difference]: Without dead ends: 1341 [2020-09-25 13:30:11,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=299, Invalid=631, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:30:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-25 13:30:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1256. [2020-09-25 13:30:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-09-25 13:30:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1430 transitions. [2020-09-25 13:30:11,929 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1430 transitions. Word has length 135 [2020-09-25 13:30:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:11,931 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 1430 transitions. [2020-09-25 13:30:11,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:30:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1430 transitions. [2020-09-25 13:30:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 13:30:11,941 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:11,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:30:11,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:11,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:11,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:11,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1515420428, now seen corresponding path program 1 times [2020-09-25 13:30:11,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:11,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629910800] [2020-09-25 13:30:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 13:30:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:30:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:30:16,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:16,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 13:30:16,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:30:16,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:17,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:30:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:17,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:17,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:30:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 13:30:17,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:17,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:30:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:17,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629910800] [2020-09-25 13:30:17,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:17,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:17,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747950447] [2020-09-25 13:30:17,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:17,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:17,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:17,261 INFO L87 Difference]: Start difference. First operand 1256 states and 1430 transitions. Second operand 5 states. [2020-09-25 13:30:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:18,963 INFO L93 Difference]: Finished difference Result 3093 states and 3629 transitions. [2020-09-25 13:30:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:18,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 13:30:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:18,973 INFO L225 Difference]: With dead ends: 3093 [2020-09-25 13:30:18,974 INFO L226 Difference]: Without dead ends: 1861 [2020-09-25 13:30:18,978 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 13:30:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-09-25 13:30:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1828. [2020-09-25 13:30:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 13:30:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2131 transitions. [2020-09-25 13:30:19,029 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2131 transitions. Word has length 150 [2020-09-25 13:30:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:19,029 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2131 transitions. [2020-09-25 13:30:19,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2131 transitions. [2020-09-25 13:30:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:30:19,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:19,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:30:19,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:19,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:19,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1541769362, now seen corresponding path program 1 times [2020-09-25 13:30:19,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:19,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359026250] [2020-09-25 13:30:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 13:30:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:30:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:30:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:30:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 13:30:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:24,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:24,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:30:24,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:30:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:30:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:24,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 13:30:24,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:30:24,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:24,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:30:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:24,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359026250] [2020-09-25 13:30:24,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:24,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:30:24,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41804113] [2020-09-25 13:30:24,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:30:24,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:30:24,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:30:24,453 INFO L87 Difference]: Start difference. First operand 1828 states and 2131 transitions. Second operand 7 states. [2020-09-25 13:30:26,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:26,922 INFO L93 Difference]: Finished difference Result 4227 states and 5099 transitions. [2020-09-25 13:30:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:30:26,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 13:30:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:26,936 INFO L225 Difference]: With dead ends: 4227 [2020-09-25 13:30:26,936 INFO L226 Difference]: Without dead ends: 2423 [2020-09-25 13:30:26,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:30:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2020-09-25 13:30:27,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2028. [2020-09-25 13:30:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2020-09-25 13:30:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2391 transitions. [2020-09-25 13:30:27,028 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2391 transitions. Word has length 175 [2020-09-25 13:30:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:27,029 INFO L479 AbstractCegarLoop]: Abstraction has 2028 states and 2391 transitions. [2020-09-25 13:30:27,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:30:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2391 transitions. [2020-09-25 13:30:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 13:30:27,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:27,037 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:30:27,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:30:27,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash 604576851, now seen corresponding path program 1 times [2020-09-25 13:30:27,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:27,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777933657] [2020-09-25 13:30:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:28,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 13:30:30,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:30:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3201 [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 13:30:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:30,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:30,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:30:30,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:30,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:30,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:30:30,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:30,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:30:30,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:30,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:30:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:30:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:30,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:30:30,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:30,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:30:30,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:30,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:30,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:30:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1