/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:50:57,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:50:57,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:50:57,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:50:57,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:50:57,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:50:57,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:50:57,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:50:57,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:50:57,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:50:57,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:50:57,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:50:57,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:50:57,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:50:57,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:50:57,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:50:57,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:50:57,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:50:57,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:50:57,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:50:57,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:50:57,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:50:57,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:50:57,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:50:57,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:50:57,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:50:57,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:50:57,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:50:57,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:50:57,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:50:57,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:50:57,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:50:57,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:50:57,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:50:57,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:50:57,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:50:57,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:50:57,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:50:57,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:50:57,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:50:57,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:50:57,350 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 07:50:57,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:50:57,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:50:57,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:50:57,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:50:57,379 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:50:57,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:50:57,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:50:57,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:50:57,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:50:57,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:50:57,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:50:57,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:50:57,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:50:57,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:50:57,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:50:57,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:50:57,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:50:57,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:50:57,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:50:57,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:50:57,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:50:57,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:50:57,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:50:57,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:50:57,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:50:57,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:50:57,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:50:57,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:50:57,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:50:57,384 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:50:57,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:50:57,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:50:57,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:50:57,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:50:57,889 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:50:57,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 07:50:57,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f40e727/b188e65bbfdd49d986bfd83454323765/FLAGd18b9f17e [2020-09-25 07:50:58,639 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:50:58,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 07:50:58,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f40e727/b188e65bbfdd49d986bfd83454323765/FLAGd18b9f17e [2020-09-25 07:50:58,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5f40e727/b188e65bbfdd49d986bfd83454323765 [2020-09-25 07:50:58,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:50:58,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:50:58,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:58,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:50:58,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:50:58,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:58, skipping insertion in model container [2020-09-25 07:50:58,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:50:58" (1/1) ... [2020-09-25 07:50:58,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:50:58,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:50:59,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:59,458 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:50:59,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:50:59,797 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:50:59,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59 WrapperNode [2020-09-25 07:50:59,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:50:59,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:50:59,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:50:59,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:50:59,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (1/1) ... [2020-09-25 07:50:59,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:50:59,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:50:59,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:50:59,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:50:59,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (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 07:51:00,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:51:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:51:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:51:00,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:51:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:51:00,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:51:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:51:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:51:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:51:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:51:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:51:01,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:51:01,393 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:51:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:01 BoogieIcfgContainer [2020-09-25 07:51:01,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:51:01,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:51:01,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:51:01,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:51:01,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:50:58" (1/3) ... [2020-09-25 07:51:01,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:01, skipping insertion in model container [2020-09-25 07:51:01,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:50:59" (2/3) ... [2020-09-25 07:51:01,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:51:01, skipping insertion in model container [2020-09-25 07:51:01,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:51:01" (3/3) ... [2020-09-25 07:51:01,413 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 07:51:01,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:51:01,436 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:51:01,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:51:01,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:51:01,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:51:01,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:51:01,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:51:01,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:51:01,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:51:01,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:51:01,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:51:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:51:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 07:51:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:01,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:51:01,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 07:51:01,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:01,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:51:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:05,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:06,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:51:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:51:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:51:06,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:06,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:51:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:51:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 07:51:06,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:51:07,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:07,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:07,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:51:07,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:07,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:07,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:51:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:07,255 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 07:51:07,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 07:51:07,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:51:07,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:51:07,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744283766] [2020-09-25 07:51:07,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:51:07,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:07,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:51:07,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:51:07,287 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:51:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:09,448 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 07:51:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:51:09,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 07:51:09,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:09,491 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 07:51:09,492 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 07:51:09,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 07:51:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 07:51:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 07:51:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:51:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:51:09,613 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 07:51:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:09,614 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:51:09,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:51:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:51:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 07:51:09,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:09,621 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, 1] [2020-09-25 07:51:09,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:51:09,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 07:51:09,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:09,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204476274] [2020-09-25 07:51:09,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:13,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 07:51:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:51:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:51:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 07:51:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:51:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:14,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:14,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:14,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:14,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:14,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:14,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:14,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:51:14,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:14,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:14,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:51:14,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:14,950 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 07:51:14,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204476274] [2020-09-25 07:51:14,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:14,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:14,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17179294] [2020-09-25 07:51:14,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:14,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:14,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:14,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:14,954 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 07:51:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:16,860 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-25 07:51:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:16,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 07:51:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:16,869 INFO L225 Difference]: With dead ends: 1559 [2020-09-25 07:51:16,869 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 07:51:16,875 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 07:51:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 07:51:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-25 07:51:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-25 07:51:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-25 07:51:16,921 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 159 [2020-09-25 07:51:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:16,922 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-25 07:51:16,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-25 07:51:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 07:51:16,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:16,928 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, 1] [2020-09-25 07:51:16,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:51:16,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:16,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 07:51:16,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:16,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611761594] [2020-09-25 07:51:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:17,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:18,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:21,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:21,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 07:51:21,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 07:51:21,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:51:21,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:21,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 07:51:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:51:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:22,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:51:22,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:22,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:22,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:51:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:51:22,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:22,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:22,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:51:22,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:22,297 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 07:51:22,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611761594] [2020-09-25 07:51:22,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:22,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:22,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015219490] [2020-09-25 07:51:22,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:22,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:22,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:22,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:22,301 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-25 07:51:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:24,278 INFO L93 Difference]: Finished difference Result 2462 states and 3119 transitions. [2020-09-25 07:51:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:24,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 07:51:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:24,289 INFO L225 Difference]: With dead ends: 2462 [2020-09-25 07:51:24,289 INFO L226 Difference]: Without dead ends: 1597 [2020-09-25 07:51:24,293 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 07:51:24,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2020-09-25 07:51:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1379. [2020-09-25 07:51:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-09-25 07:51:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1720 transitions. [2020-09-25 07:51:24,342 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1720 transitions. Word has length 168 [2020-09-25 07:51:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:24,343 INFO L479 AbstractCegarLoop]: Abstraction has 1379 states and 1720 transitions. [2020-09-25 07:51:24,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1720 transitions. [2020-09-25 07:51:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 07:51:24,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:24,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:24,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:51:24,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:24,351 INFO L82 PathProgramCache]: Analyzing trace with hash -971073182, now seen corresponding path program 1 times [2020-09-25 07:51:24,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:24,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622668571] [2020-09-25 07:51:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:29,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 07:51:29,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:51:29,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:51:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:29,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 07:51:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 07:51:29,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:51:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:51:29,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:29,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:51:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:29,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:29,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 07:51:29,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:29,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 07:51:29,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:29,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:29,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:51:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:51:29,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622668571] [2020-09-25 07:51:29,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:29,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:51:29,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186435080] [2020-09-25 07:51:29,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:51:29,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:51:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:51:29,783 INFO L87 Difference]: Start difference. First operand 1379 states and 1720 transitions. Second operand 5 states. [2020-09-25 07:51:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:31,853 INFO L93 Difference]: Finished difference Result 3697 states and 4725 transitions. [2020-09-25 07:51:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:51:31,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 07:51:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:31,873 INFO L225 Difference]: With dead ends: 3697 [2020-09-25 07:51:31,874 INFO L226 Difference]: Without dead ends: 2342 [2020-09-25 07:51:31,880 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 07:51:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-09-25 07:51:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2094. [2020-09-25 07:51:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2094 states. [2020-09-25 07:51:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2094 states to 2094 states and 2666 transitions. [2020-09-25 07:51:31,956 INFO L78 Accepts]: Start accepts. Automaton has 2094 states and 2666 transitions. Word has length 185 [2020-09-25 07:51:31,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:31,957 INFO L479 AbstractCegarLoop]: Abstraction has 2094 states and 2666 transitions. [2020-09-25 07:51:31,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:51:31,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2094 states and 2666 transitions. [2020-09-25 07:51:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:51:31,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:31,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:31,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:51:31,973 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:31,974 INFO L82 PathProgramCache]: Analyzing trace with hash 860699330, now seen corresponding path program 1 times [2020-09-25 07:51:31,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:31,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285986666] [2020-09-25 07:51:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:37,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:51:37,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:51:37,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 07:51:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:37,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:37,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:37,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:37,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:37,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:37,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:37,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:37,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:51:37,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:51:37,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:37,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:51:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:37,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:51:37,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:51:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:37,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:37,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:37,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 07:51:37,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:37,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:37,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:51:37,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285986666] [2020-09-25 07:51:37,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:37,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:51:37,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545422126] [2020-09-25 07:51:37,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:51:37,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:51:37,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:51:37,389 INFO L87 Difference]: Start difference. First operand 2094 states and 2666 transitions. Second operand 7 states. [2020-09-25 07:51:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:51:39,771 INFO L93 Difference]: Finished difference Result 4632 states and 6089 transitions. [2020-09-25 07:51:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:51:39,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 07:51:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:51:39,795 INFO L225 Difference]: With dead ends: 4632 [2020-09-25 07:51:39,796 INFO L226 Difference]: Without dead ends: 2562 [2020-09-25 07:51:39,809 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 07:51:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2020-09-25 07:51:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 2427. [2020-09-25 07:51:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-09-25 07:51:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3095 transitions. [2020-09-25 07:51:39,925 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3095 transitions. Word has length 192 [2020-09-25 07:51:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:51:39,925 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 3095 transitions. [2020-09-25 07:51:39,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:51:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3095 transitions. [2020-09-25 07:51:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 07:51:39,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:51:39,942 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:39,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:51:39,943 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:51:39,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:51:39,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1724740063, now seen corresponding path program 1 times [2020-09-25 07:51:39,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:51:39,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545051829] [2020-09-25 07:51:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:51:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:40,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:40,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:42,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:44,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:44,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 07:51:44,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 07:51:44,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:51:44,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:44,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:51:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 07:51:44,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 07:51:44,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:45,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:51:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:45,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:51:45,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:51:45,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:45,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:51:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:45,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:51:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:51:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:51:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:45,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:51:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:51:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:45,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:51:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:51:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:51:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 07:51:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:51:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:51:45,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:51:45,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:51:45,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:51:45,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:51:45,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:51:45,447 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 07:51:45,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545051829] [2020-09-25 07:51:45,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:51:45,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:51:45,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302780661] [2020-09-25 07:51:45,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:51:45,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:51:45,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:51:45,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:51:45,450 INFO L87 Difference]: Start difference. First operand 2427 states and 3095 transitions. Second operand 8 states. [2020-09-25 07:51:46,153 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65