/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:03,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:03,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:03,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:03,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:03,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:03,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:03,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:03,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:03,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:03,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:03,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:03,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:03,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:03,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:03,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:03,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:03,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:03,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:03,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:03,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:03,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:03,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:03,359 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:03,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:03,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:03,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:03,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:03,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:03,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:03,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:03,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:03,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:03,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:03,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:03,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:03,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:03,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:03,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:03,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:03,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:03,395 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 [2020-09-21 12:32:03,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:03,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:03,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:03,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:03,443 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:03,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:03,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:03,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:03,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:03,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:03,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:03,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:03,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:03,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:03,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:03,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:03,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:03,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:03,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:03,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:03,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:03,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:03,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:03,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:03,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:03,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:03,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:03,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:03,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:03,450 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:03,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:03,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:03,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:03,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:03,954 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:03,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-21 12:32:04,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c26bc7e/24d8ba6a019940d790b727de7002c90d/FLAGcfc7d9a49 [2020-09-21 12:32:04,678 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:04,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-21 12:32:04,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c26bc7e/24d8ba6a019940d790b727de7002c90d/FLAGcfc7d9a49 [2020-09-21 12:32:04,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77c26bc7e/24d8ba6a019940d790b727de7002c90d [2020-09-21 12:32:04,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:04,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:04,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:04,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:04,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:04,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:04" (1/1) ... [2020-09-21 12:32:04,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b5e0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:04, skipping insertion in model container [2020-09-21 12:32:04,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:04" (1/1) ... [2020-09-21 12:32:04,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:05,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:05,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:05,914 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:06,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:06,202 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:06,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06 WrapperNode [2020-09-21 12:32:06,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:06,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:06,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:06,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:06,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (1/1) ... [2020-09-21 12:32:06,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:06,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:06,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:06,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:06,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (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 [2020-09-21 12:32:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:08,362 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:08,362 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:08,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:08 BoogieIcfgContainer [2020-09-21 12:32:08,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:08,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:08,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:08,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:08,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:04" (1/3) ... [2020-09-21 12:32:08,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4a2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:08, skipping insertion in model container [2020-09-21 12:32:08,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:06" (2/3) ... [2020-09-21 12:32:08,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4a2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:08, skipping insertion in model container [2020-09-21 12:32:08,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:08" (3/3) ... [2020-09-21 12:32:08,386 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-21 12:32:08,398 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:08,409 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:08,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:08,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:08,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:08,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:08,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:08,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:08,470 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:08,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:08,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-09-21 12:32:08,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:32:08,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:08,515 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] [2020-09-21 12:32:08,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:08,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1626993173, now seen corresponding path program 1 times [2020-09-21 12:32:08,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:08,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974637298] [2020-09-21 12:32:08,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 12:32:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-21 12:32:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:32:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-21 12:32:09,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:09,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:09,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:09,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:09,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:32:09,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:09,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:09,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974637298] [2020-09-21 12:32:09,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:09,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:09,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845158032] [2020-09-21 12:32:09,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:09,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:09,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:09,512 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2020-09-21 12:32:12,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:12,241 INFO L93 Difference]: Finished difference Result 795 states and 1396 transitions. [2020-09-21 12:32:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:12,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-21 12:32:12,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:12,266 INFO L225 Difference]: With dead ends: 795 [2020-09-21 12:32:12,266 INFO L226 Difference]: Without dead ends: 439 [2020-09-21 12:32:12,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-21 12:32:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2020-09-21 12:32:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-21 12:32:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 626 transitions. [2020-09-21 12:32:12,366 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 626 transitions. Word has length 40 [2020-09-21 12:32:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:12,367 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 626 transitions. [2020-09-21 12:32:12,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 626 transitions. [2020-09-21 12:32:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-21 12:32:12,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:12,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:12,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:12,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1781272370, now seen corresponding path program 1 times [2020-09-21 12:32:12,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:12,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746681830] [2020-09-21 12:32:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-21 12:32:13,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:32:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 12:32:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:32:13,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:13,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:13,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:13,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:13,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:13,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:32:13,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:13,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-21 12:32:13,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:13,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:32:13,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:13,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746681830] [2020-09-21 12:32:13,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:13,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:13,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278320201] [2020-09-21 12:32:13,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:13,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:13,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:13,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:13,800 INFO L87 Difference]: Start difference. First operand 427 states and 626 transitions. Second operand 5 states. [2020-09-21 12:32:16,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:16,375 INFO L93 Difference]: Finished difference Result 1241 states and 1846 transitions. [2020-09-21 12:32:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:16,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-09-21 12:32:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:16,383 INFO L225 Difference]: With dead ends: 1241 [2020-09-21 12:32:16,384 INFO L226 Difference]: Without dead ends: 820 [2020-09-21 12:32:16,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-09-21 12:32:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 814. [2020-09-21 12:32:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-09-21 12:32:16,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1096 transitions. [2020-09-21 12:32:16,472 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1096 transitions. Word has length 110 [2020-09-21 12:32:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:16,473 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1096 transitions. [2020-09-21 12:32:16,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:16,473 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1096 transitions. [2020-09-21 12:32:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-21 12:32:16,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:16,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:16,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:16,481 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:16,482 INFO L82 PathProgramCache]: Analyzing trace with hash 559014170, now seen corresponding path program 1 times [2020-09-21 12:32:16,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:16,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204441735] [2020-09-21 12:32:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:16,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:16,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-21 12:32:17,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:32:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-21 12:32:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:32:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:17,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:32:17,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:17,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:17,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:17,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:32:17,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:17,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 12:32:17,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:32:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:18,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204441735] [2020-09-21 12:32:18,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:18,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:18,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119798992] [2020-09-21 12:32:18,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:18,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:18,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:18,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:18,004 INFO L87 Difference]: Start difference. First operand 814 states and 1096 transitions. Second operand 5 states. [2020-09-21 12:32:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:19,952 INFO L93 Difference]: Finished difference Result 1645 states and 2224 transitions. [2020-09-21 12:32:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:19,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-09-21 12:32:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:19,964 INFO L225 Difference]: With dead ends: 1645 [2020-09-21 12:32:19,964 INFO L226 Difference]: Without dead ends: 820 [2020-09-21 12:32:19,967 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 [2020-09-21 12:32:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-09-21 12:32:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 814. [2020-09-21 12:32:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-09-21 12:32:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1090 transitions. [2020-09-21 12:32:20,005 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1090 transitions. Word has length 120 [2020-09-21 12:32:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:20,008 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1090 transitions. [2020-09-21 12:32:20,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1090 transitions. [2020-09-21 12:32:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-21 12:32:20,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:20,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:20,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:20,023 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:20,025 INFO L82 PathProgramCache]: Analyzing trace with hash 914687114, now seen corresponding path program 1 times [2020-09-21 12:32:20,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:20,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377651602] [2020-09-21 12:32:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:20,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:32:21,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:32:21,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:21,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:21,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:21,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:21,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:21,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:21,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-21 12:32:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:21,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377651602] [2020-09-21 12:32:21,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:21,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:32:21,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482344728] [2020-09-21 12:32:21,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:32:21,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:21,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:32:21,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:21,411 INFO L87 Difference]: Start difference. First operand 814 states and 1090 transitions. Second operand 6 states. [2020-09-21 12:32:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:23,898 INFO L93 Difference]: Finished difference Result 2014 states and 2769 transitions. [2020-09-21 12:32:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:23,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-09-21 12:32:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:23,908 INFO L225 Difference]: With dead ends: 2014 [2020-09-21 12:32:23,909 INFO L226 Difference]: Without dead ends: 1206 [2020-09-21 12:32:23,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-21 12:32:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1195. [2020-09-21 12:32:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2020-09-21 12:32:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1636 transitions. [2020-09-21 12:32:23,955 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1636 transitions. Word has length 128 [2020-09-21 12:32:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:23,957 INFO L479 AbstractCegarLoop]: Abstraction has 1195 states and 1636 transitions. [2020-09-21 12:32:23,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:32:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1636 transitions. [2020-09-21 12:32:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-21 12:32:23,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:23,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:23,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:23,962 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:23,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2054180197, now seen corresponding path program 1 times [2020-09-21 12:32:23,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:23,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81953550] [2020-09-21 12:32:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:25,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-21 12:32:25,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:25,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:25,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:25,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:25,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:25,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:32:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:32:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-21 12:32:25,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-21 12:32:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:25,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:32:25,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-21 12:32:25,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:25,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:32:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:25,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81953550] [2020-09-21 12:32:25,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:25,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:25,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848096310] [2020-09-21 12:32:25,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:25,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:25,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:25,795 INFO L87 Difference]: Start difference. First operand 1195 states and 1636 transitions. Second operand 7 states. [2020-09-21 12:32:29,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:29,585 INFO L93 Difference]: Finished difference Result 2807 states and 3916 transitions. [2020-09-21 12:32:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:29,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 218 [2020-09-21 12:32:29,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:29,603 INFO L225 Difference]: With dead ends: 2807 [2020-09-21 12:32:29,603 INFO L226 Difference]: Without dead ends: 1618 [2020-09-21 12:32:29,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2020-09-21 12:32:29,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1600. [2020-09-21 12:32:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1600 states. [2020-09-21 12:32:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2163 transitions. [2020-09-21 12:32:29,661 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2163 transitions. Word has length 218 [2020-09-21 12:32:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:29,662 INFO L479 AbstractCegarLoop]: Abstraction has 1600 states and 2163 transitions. [2020-09-21 12:32:29,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2163 transitions. [2020-09-21 12:32:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-21 12:32:29,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:29,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:32:29,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:29,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:29,671 INFO L82 PathProgramCache]: Analyzing trace with hash -657956442, now seen corresponding path program 1 times [2020-09-21 12:32:29,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:29,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655271282] [2020-09-21 12:32:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-21 12:32:30,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-21 12:32:30,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:30,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:30,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:30,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:32:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:30,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:32:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:31,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:31,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:32:31,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:31,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-21 12:32:31,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:31,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:31,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:32:31,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:31,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655271282] [2020-09-21 12:32:31,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:31,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:31,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132630848] [2020-09-21 12:32:31,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:31,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:31,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:31,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:31,419 INFO L87 Difference]: Start difference. First operand 1600 states and 2163 transitions. Second operand 7 states. [2020-09-21 12:32:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:35,650 INFO L93 Difference]: Finished difference Result 5556 states and 7841 transitions. [2020-09-21 12:32:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:35,651 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-21 12:32:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:35,676 INFO L225 Difference]: With dead ends: 5556 [2020-09-21 12:32:35,676 INFO L226 Difference]: Without dead ends: 3962 [2020-09-21 12:32:35,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2020-09-21 12:32:35,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3565. [2020-09-21 12:32:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2020-09-21 12:32:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4770 transitions. [2020-09-21 12:32:35,829 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4770 transitions. Word has length 229 [2020-09-21 12:32:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:35,830 INFO L479 AbstractCegarLoop]: Abstraction has 3565 states and 4770 transitions. [2020-09-21 12:32:35,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4770 transitions. [2020-09-21 12:32:35,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-21 12:32:35,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:35,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:32:35,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:35,838 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:35,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash 720279198, now seen corresponding path program 1 times [2020-09-21 12:32:35,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:35,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984905830] [2020-09-21 12:32:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-21 12:32:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-21 12:32:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-21 12:32:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:37,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:37,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:37,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:37,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 12:32:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:32:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:37,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:37,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-21 12:32:37,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:37,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-21 12:32:37,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:37,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:37,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:37,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-21 12:32:37,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:37,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984905830] [2020-09-21 12:32:37,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:37,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:37,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353128268] [2020-09-21 12:32:37,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:37,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:37,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:37,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:37,789 INFO L87 Difference]: Start difference. First operand 3565 states and 4770 transitions. Second operand 7 states. [2020-09-21 12:32:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:41,240 INFO L93 Difference]: Finished difference Result 8139 states and 11093 transitions. [2020-09-21 12:32:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:32:41,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-09-21 12:32:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:41,263 INFO L225 Difference]: With dead ends: 8139 [2020-09-21 12:32:41,263 INFO L226 Difference]: Without dead ends: 4580 [2020-09-21 12:32:41,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:32:41,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2020-09-21 12:32:41,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 4549. [2020-09-21 12:32:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4549 states. [2020-09-21 12:32:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6076 transitions. [2020-09-21 12:32:41,377 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6076 transitions. Word has length 233 [2020-09-21 12:32:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:41,378 INFO L479 AbstractCegarLoop]: Abstraction has 4549 states and 6076 transitions. [2020-09-21 12:32:41,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6076 transitions. [2020-09-21 12:32:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-21 12:32:41,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:41,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:32:41,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:41,385 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:41,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:41,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1281546006, now seen corresponding path program 1 times [2020-09-21 12:32:41,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:41,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173378003] [2020-09-21 12:32:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-21 12:32:42,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-21 12:32:42,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-21 12:32:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-21 12:32:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:42,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:42,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 12:32:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:32:42,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-21 12:32:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-21 12:32:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:43,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:32:43,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-21 12:32:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:43,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 12:32:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:43,386 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:43,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173378003] [2020-09-21 12:32:43,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:43,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:32:43,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554952169] [2020-09-21 12:32:43,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:32:43,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:32:43,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:32:43,389 INFO L87 Difference]: Start difference. First operand 4549 states and 6076 transitions. Second operand 8 states. [2020-09-21 12:32:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:48,139 INFO L93 Difference]: Finished difference Result 10893 states and 15009 transitions. [2020-09-21 12:32:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:32:48,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2020-09-21 12:32:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:48,176 INFO L225 Difference]: With dead ends: 10893 [2020-09-21 12:32:48,176 INFO L226 Difference]: Without dead ends: 6350 [2020-09-21 12:32:48,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:32:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2020-09-21 12:32:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6316. [2020-09-21 12:32:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6316 states. [2020-09-21 12:32:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6316 states to 6316 states and 8536 transitions. [2020-09-21 12:32:48,371 INFO L78 Accepts]: Start accepts. Automaton has 6316 states and 8536 transitions. Word has length 238 [2020-09-21 12:32:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:48,372 INFO L479 AbstractCegarLoop]: Abstraction has 6316 states and 8536 transitions. [2020-09-21 12:32:48,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:32:48,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6316 states and 8536 transitions. [2020-09-21 12:32:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-21 12:32:48,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:48,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-21 12:32:48,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:48,382 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:48,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:48,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1871383572, now seen corresponding path program 1 times [2020-09-21 12:32:48,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:48,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14335999] [2020-09-21 12:32:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-21 12:32:49,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:49,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:32:49,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:49,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-21 12:32:49,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:32:49,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-21 12:32:49,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-21 12:32:49,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-21 12:32:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-21 12:32:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-21 12:32:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-21 12:32:50,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:50,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:32:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:50,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14335999] [2020-09-21 12:32:50,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:50,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:50,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064830991] [2020-09-21 12:32:50,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:50,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:50,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:50,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:50,373 INFO L87 Difference]: Start difference. First operand 6316 states and 8536 transitions. Second operand 7 states. [2020-09-21 12:32:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:54,412 INFO L93 Difference]: Finished difference Result 17047 states and 24321 transitions. [2020-09-21 12:32:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:54,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-09-21 12:32:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:54,464 INFO L225 Difference]: With dead ends: 17047 [2020-09-21 12:32:54,465 INFO L226 Difference]: Without dead ends: 10737 [2020-09-21 12:32:54,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:54,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2020-09-21 12:32:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 10624. [2020-09-21 12:32:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10624 states. [2020-09-21 12:32:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 14451 transitions. [2020-09-21 12:32:54,788 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 14451 transitions. Word has length 257 [2020-09-21 12:32:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:54,789 INFO L479 AbstractCegarLoop]: Abstraction has 10624 states and 14451 transitions. [2020-09-21 12:32:54,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 14451 transitions. [2020-09-21 12:32:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-21 12:32:54,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:54,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-21 12:32:54,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:32:54,800 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:54,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1219984608, now seen corresponding path program 1 times [2020-09-21 12:32:54,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:54,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522617630] [2020-09-21 12:32:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:55,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:55,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:55,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-21 12:32:55,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-21 12:32:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-09-21 12:32:55,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:32:55,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:56,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:56,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:56,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:56,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:56,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:56,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:56,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking...